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| Concept / Principle |
Category |
Caption |
Latin Name |
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| Aggregation, birds |
Auks and Puffins |
Atlantic Puffin group, resting on a large rock |
Fratercula arctica |
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| Aggregation, birds |
Auks and Puffins |
Atlantic Puffins, numerous, burrows visible |
Fratercula arctica |
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| Aggregation, birds |
Auks and Puffins |
Common Murre, individual and group, Alaska |
Uria aalge |
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| Aggregation, birds |
Auks and Puffins |
Common Murres and cliffs, Oregon |
Uria aalge |
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| Aggregation, birds |
Cormorants |
Pelagic Cormorants, Rookery |
Phalacrocorax pelagicus |
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| Aggregation, birds |
Gannets and Boobies |
Northern Gannets breeding colony |
Morus bassanus |
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| Aggregation, birds |
Gulls |
Western Gull nesting colony, two views |
Larus occidentalis |
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| Aggregation, mammals |
Sea Lions and Seals |
Male walrus, Eight clickable thumbnails |
Odobenus rosmarus |
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| Aggregation, mammals |
Sea Lions and Seals |
Male walruses, large group of males |
Odobenus rosmarus |
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| Aggression |
Beetles: Darkling |
Dunes Darkling Beetles fighting |
Eleodes suturalis |
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| Aggression |
Gannets and Boobies |
Northern Gannets fighting over territory |
Morus bassanus |
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| Aggression |
Sea Lions and Seals |
Male walruses, a face-off |
Odobenus rosmarus |
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| Agriculture |
Ecuador |
Haciendas on steep hillside, Ecuador |
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| Alertness and Guarding |
Rodents |
Golden-Mantled Ground Squirrel |
Spermophilus lateralis |
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| Alertness and Guarding |
Rodents |
Yellow-Bellied Marmot |
Marmota flaviventris |
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| Altiplano / Páramo fauna |
Camel family |
Vicuñas, clickable thumbnails |
Vicugna vicugna |
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| Andes landscapes |
Ecuador |
Volcan Chimborazo and surrounding country |
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| Autumn colors |
West Virginia |
Bare crabapple with autumn color background |
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| Boreal forest |
Northwest Territories |
Wetland and Boreal forest, Northwest Territories |
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| Carnivorous Plants |
Wildflowers |
Round Leaved Sundew |
Drosera rotundifolia |
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| Carrion feeders |
Beetles: Carrion |
Margined Carrion Beetle |
Oiceoptoma noveboracense |
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| Cloud Forest fauna |
Cotingas |
Olivaceous Piha in Ecuador Cloud Forest |
Snowornis cryptolophus |
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| Cloud Forest fauna |
Ground Antbirds |
Female Yellow-breasted Antpitta |
Grallaria flavotincta |
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| Cloud Forest fauna |
Ground Antbirds |
Giant Antpitta female, head-on portrait |
Grallaria gigantea |
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| Cloud Forest fauna |
Ground Antbirds |
Giant Antpitta female, in profile |
Grallaria gigantea |
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| Cloud Forest fauna |
Hummingbirds |
Booted Racket-tail, hummingbird at feeder |
Ocreatus underwoodii |
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| Cloud Forest fauna |
Hummingbirds |
Brown Inca at hummingbird feeder, Ecuador |
Coeligena wilsoni |
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| Cloud Forest fauna |
Hummingbirds |
Green Thorntail female, hummingbird, Ecuador |
Discosura conversii |
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| Cloud Forest fauna |
Hummingbirds |
Green Violet-ear, perched hummingbird |
Colibri thalassinus |
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| Cloud Forest fauna |
Hummingbirds |
Tufted Coquette, Arima Valley, Trinidad |
Lophornis ornatus |
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| Cloud Forest fauna |
Hummingbirds |
Violet-tailed Sylph, two photos at feeder |
Aglaiocercus coelestis |
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| Cloud Forest fauna |
Leafhoppers |
Boldly striped leafhoppers from Ecuador |
Fusigonalia sp. |
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| Cloud Forest fauna |
Leafhoppers |
Purple and green leafhopper, Ecuador |
Paracrocampsa sp. |
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| Cloud Forest fauna |
Leafhoppers |
Red Sharpshooter in the cloud forest of Ecuador |
Onega cf. freyi |
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| Cloud Forest fauna |
Lizards |
Basking
Golden Tegu lizard with flower blossoms |
Tupinambis teguixin |
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| Cloud Forest fauna |
Other Birds |
White-Bearded Manakin male, Trinidad |
Manacus manacus |
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| Cloud Forest fauna |
Tanagers |
Blue-winged Mountain Tanager |
Anisognathus somptuosus |
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| Cloud Forest fauna |
Tanagers |
Green Honeycreeper, Trinidad photo |
Chlorophanes spiza |
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| Cloud Forest fauna |
Toucans and Barbets |
Crimson-Rumped Toucanet in Cloud Forest |
Aulacorhynchus haematopygus |
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| Cloud Forest fauna |
Toucans and Barbets |
Pale mandibled Araçari on fence, Ecuador pic |
Pteroglossus erythropygius |
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| Commensalism |
Turtles |
Hawksbill Turtle with Remora |
Eretmochelys imbricata |
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| Coral Reefs |
Angelfishes |
Rock Beauty |
Holacanthus tricolor |
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| Coral Reefs |
Grunts |
French Grunt |
Haemulon flavolineatum |
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| Coral Reefs |
Grunts |
Smallmouth Grunts |
Haemulon chrysargyreum |
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| Courtship and Display |
Cormorants |
Brandt's cormorants, male displaying for female |
Phalacrocorax penicillatus |
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| Courtship and Display |
Ducks, Geese, Swans |
Ruddy Duck male, display 1 and 2 |
Oxyura jamaicensis |
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| Courtship and Display |
Ducks, Geese, Swans |
Ruddy Duck male, display 3, also pair |
Oxyura jamaicensis |
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| Courtship and Display |
Ducks, Geese, Swans |
Wood Duck male swimming, vocalizing |
Aix sponsa |
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| Courtship and Display |
Grouse |
Lesser Prairie Chicken erecting pinnae 2 |
Tympanuchus pallidicinctus |
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| Courtship and Display |
Grouse |
Lesser Prairie Chicken vocalizing |
Tympanuchus pallidicinctus |
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| Courtship and Display |
Grouse |
Lesser Prairie Chicken, one male displays |
Tympanuchus pallidicinctus |
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| Courtship and Display |
Grouse |
Lesser Prairie Chicken, two males display |
Tympanuchus pallidicinctus |
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| Cryptic Behavior |
Turtles |
Snapping Turtle and mud |
Chelydra serpentina |
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| Cryptic Coloration |
Bugs |
Toad Bug |
Gelastocoris oculatus |
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| Cryptic Coloration |
Bugs |
Toad Bug |
Gelastocoris oculatus |
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| Cryptic Coloration |
Cicadas and Hoppers |
Acanaloniid hopper |
Acanalonia bivittata |
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| Cryptic Coloration |
Cicadas and Hoppers |
Locust Treehopper female |
Thelia bimaculata |
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| Cryptic Coloration |
Cicadas and Hoppers |
Locust Treehopper male |
Thelia bimaculata |
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| Cryptic Coloration |
Cicadas and Hoppers |
Locust Treehopper nymph, 5th instar |
Thelia bimaculata |
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| Cryptic Coloration |
Salamanders |
Green Salamander |
Aneides aeneus |
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| Defensive Behavior |
Beetles: Darkling |
Clown Beetle, headstand |
Eleodes hispilabris |
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| Defensive Behavior |
Beetles: Darkling |
Dunes Darkling Beetle, headstand |
Eleodes suturalis |
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| Defensive Behavior |
Moths: Caterpillars |
Blinded Sphinx, caterpillar |
Paonias excaecatus |
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| Defensive Behavior |
Snakes |
Hognose Snake displaying |
Heterodon platirhinos |
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| Defensive Behavior |
Snakes |
Hognose Snake feigning death |
Heterodon platirhinos |
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| Defensive coloration:
warning |
Bugs |
Bright red assassin bug adult |
Rhiginia cruciata |
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| Defensive coloration:
warning |
Bugs |
Sycamore Assassin Bug |
Pselliopus cinctus |
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| Defensive Markings:
Eye-spots |
Beetles: Click |
Eyed and Blind Elaters |
Alaus myops, A. oculatus |
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| Defensive Markings:
Eye-spots |
Beetles: Click |
Eyed Click Beetle |
Alaus oculatus |
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| Defensive Markings:
Eye-spots |
Butterflies: Caterpillars |
Eastern Tiger Swallowtail caterpillars |
Papilio glaucus |
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| Defensive Markings:
Eye-spots |
Moths |
Io Moth |
Automeris io |
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| Defensive Markings:
Eye-spots |
Moths |
Small-Eyed Sphinx |
Paonias myops |
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| Defensive mimicry: of
wasps |
Flies: Syrphid |
Wasp-mimic Syrphid fly, two views |
Temnostoma balyras |
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| Defensive Structures:
Spines |
Moths: Caterpillars |
Hickory Horned Devil, head |
Citheronia regalis |
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| Defensive Structures:
Spines |
Moths: Caterpillars |
Imperial Moth Caterpillar |
Eacles imperialis |
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| Defensive Structures:
Spines |
Moths: Caterpillars |
Io Moth Caterpillar |
Automeris io |
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| Desert Dwellers |
Beetles: Hide |
Hide Beetle, 3 views |
Omorgus sp. |
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| Desert Dwellers |
Bugs |
Giant Agave Bug |
Acanthocephala thomasi |
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| Desert Dwellers |
Cacti |
Giant Saguaro |
Carnegiea gigantea |
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| Desert Dwellers |
Flies: Cactus |
Cactus Fly, Neriidae |
Odontoloxozus longicornis |
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| Desert Dwellers |
Lizards |
Eastern Collared Lizard, nice close portrait |
Crotaphytus collaris |
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| Desert Dwellers |
Lizards |
Eastern Collared Lizard, showing body, not tail |
Crotaphytus collaris |
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| Desert Dwellers |
Lizards |
Eastern Collared Lizard, view includes tail |
Crotaphytus collaris |
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| Desert Dwellers |
Lizards |
Long-nosed Leopard Lizard |
Gambelia wislizenii |
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| Desert Dwellers |
Lizards |
Side-Blotched Lizard |
Uta stansburiana |
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| Desert Dwellers |
Other Birds |
Greater Roadrunner, head and shoulders |
Geococcyx californianus |
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| Desert Dwellers |
Shrubs |
Skunkbush Sumac column in the dunes |
Rhus trilobata |
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| Disease vectors |
Flies: Muscid |
Muscid fly in genus Musca |
Musca autumnalis |
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| Domesticated mammals |
Camel family |
Llama in Ecuador's highlands, brown llama |
Lama glama |
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| Ectoparasite control |
Camel family |
Vicuñas rolling in the dust |
Vicugna vicugna |
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| Egg Guarding |
Bugs |
Giant Water Bug, male with eggs |
Belostoma sp. |
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| Endangered and Threatened |
Beetles: Ground: Tiger |
Big Sand Tiger Beetle, Mescalero subsp. |
Cicindela formosa
rutilovirescens |
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| Endangered and Threatened |
Grouse |
Lesser Prairie Chicken erecting pinnae |
Tympanuchus pallidicinctus |
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| Endangered and Threatened |
Rails and Cranes |
Whooping Cranes |
Grus americana |
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| Endangered and Threatened |
Sea Lions and Seals |
Steller Sea Lion (Northern Sea Lion), Alaska |
Eumetopias jubatus |
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| Endangered and Threatened |
Seals and Sea Lions |
Steller Sea Lion (Northern Sea Lion), Oregon |
Eumetopias jubatus |
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| Endangered and Threatened |
Turtles |
Hawksbill Turtle |
Eretmochelys imbricata |
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| Endemic species |
Lizards |
Bonaire Anole |
Anolis bonairensis |
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| Erosion |
Tennessee |
Mining Erosion, Copper Mine near Ducktown |
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| Feeding Behavior: Birds |
Anhingas |
Anhinga fishing |
Anhinga anhinga |
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| Feeding Behavior: Birds |
Bitterns, Herons, Egrets |
Reddish Egret |
Egretta rufescens |
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| Feeding Behavior: Birds |
Hummingbirds |
Ruby-Throated Hummingbird at Mimosa |
Archilochus colubris |
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| Feeding Behavior: Birds |
Toucans and Barbets |
Female Red-headed Barbet on bananas |
Eubucco bourcierii |
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| Feeding Behavior: Birds |
Toucans and Barbets |
Male Red-headed Barbet on bananas |
Eubucco bourcierii |
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| Feeding Behavior: Birds |
Toucans and Barbets |
Male Red-headed Barbet singing |
Eubucco bourcierii |
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| Feeding Behavior: Mammals |
Rodents |
Red-tailed Squirrel feeding on fruit |
Sciurus granatensis |
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| Fishing industry, incl.
small-scale |
Honduras |
Garifuna man with his canoe rigged with sail |
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| Flight |
Gannets and Boobies |
Northern Gannet in flight, Newfoundland |
Morus bassanus |
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| Flying birds |
Bitterns, Herons, Egrets |
Great Blue Heron taking off from the water |
Ardea herodias |
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| Forest Pests |
Moths: Caterpillars |
Fall Webworm |
Hyphantria cunea |
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| Forest Pests |
Moths: Caterpillars |
Forest Tent Caterpillar |
Malacosoma disstria |
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| Forest Pests |
Moths: Caterpillars |
Gypsy Moth Caterpillar |
Lymantria dispar |
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| Forests |
Trees |
Coast Redwood |
Sequoia sempervirons |
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| Fruit raising and
marketing |
Ecuador |
Colorful Fruit Market in Ecuador |
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| Garden pests |
Rodents |
Four young groundhogs (woodchucks) at dusk |
Marmota monax |
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| Grooming, insect |
Wasps |
Northern Paper Wasp cleaning antennae |
Polistes fuscatus |
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| Hibernation |
Turtles |
E. Box Turtle just emerged from hibernation |
Terrapene carolina |
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| Insect anatomy |
Wasps |
Head details (ocelli etc.), Ichneumon wasp |
Enicospilus sp. |
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| Insect Life Cycle |
Dragonflies |
Eastern Amberwing teneral with cast skin |
Perithemis tenera |
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| Introduced species |
Beetles: Ladybird |
Multicolored Asian Lady Beetle: larva |
Harmonia axyridis |
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| Introduced species |
Cicadas and Hoppers |
Silver Leafhopper |
Athysanus argentarius |
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| Introduced species |
Wasps |
European Hornet |
Vespa crabro |
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| Mangrove-lined rivers |
Honduras |
Dawn along mangrove-lined river, Honduras |
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| Mating Insects: Beetles |
Beetles: Leaf |
Asparagus Beetles |
Crioceris asparagi |
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| Mating Insects:
Damselflies |
Damselflies |
Blue-Fronted Dancer mating wheel |
Argia apicalis |
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| Mating Insects:
Damselflies |
Damselflies |
Eastern Red Damsel mating wheel |
Amphiagrion saucium |
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| Mating Insects:
Damselflies |
Damselflies |
Powdered Dancers, in tandem |
Argia moesta |
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| Mating Insects:
Damselflies |
Damselflies |
Sedge Sprite, Mating Pair (wheel position) |
Nehalennia irene |
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| Mating Insects:
Damselflies |
Damselflies |
Stream Bluets mating wheel |
Enallagma exsulans |
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| Mating Insects:
Damselflies |
Damselflies |
Vesper Bluets in mating wheel |
Enallagma vesperum |
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| Mating Insects:
Dragonflies |
Dragonflies |
Mosaic Darner species (mating wheel) |
Aeshna sp. |
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| Mating Insects:
Dragonflies |
Dragonflies |
White-Faced Meadowhawk, mating wheel |
Sympetrum obtrusum |
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| Mating Insects: Flies |
Flies: Fungus Gnat |
Fungus Gnats mating |
Rondaniella dimidiata |
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| Mining |
Factories and mines |
Kentucky strip mine in operation |
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|
| Mutualism |
Ants |
Carpenter Ants Herding Treehoppers |
Camponotus sp. |
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| Native Americans |
Mississippi |
Group of eight Middle Woodland Indian mounds |
|
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| Nectar-feeding |
Butterflies |
Atlantis Fritillary on flower, showing underwings |
Speyeria atlantis |
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| Nectar-feeding |
Butterflies |
Atlantis Fritillary, showing face and mouthparts |
Speyeria atlantis |
|
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| Nest building: insects |
Wasps |
Mason Wasp scraping up mud for nest |
Monobia quadridens |
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|
| Nest-building, birds |
Blackbirds |
Huge tree with many Montezuma Oropendola nests |
Psarocolius montezuma |
|
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|
| Nest-building, birds |
Blackbirds |
Nest-building, Montezuma Oropendola |
Psarocolius montezuma |
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| Nesting |
Auks and Puffins |
Atlantic Puffin, one, at the burrow entrance |
Fratercula arctica |
|
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|
| Nesting |
Cormorants |
Brandt's cormorant, gathering grass for nesting |
Phalacrocorax penicillatus |
|
|
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|
|
| Nesting |
Gulls |
Black-legged Kittiwake, nesting birds |
Rissa tridactyla |
|
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| Ovipositing |
Beetles: Scarab |
Tumblebug with Dung Ball |
Canthon vigilans |
|
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|
| Ovipositing |
Damselflies |
Orange Bluet ovipositing |
Enallagma signatum |
|
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|
|
|
| Ovipositing |
Damselflies |
Spotted Spreadwing ovipositing |
Lestes congener |
|
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|
|
| Ovipositing |
Damselflies |
Superb Jewelwing ovipositing with male |
Calopteryx amata |
|
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|
|
| Ovipositing |
Damselflies |
Vesper Bluets in tandem |
Enallagma vesperum |
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| Ovipositing |
Damselflies |
Vesper Bluets ovipositing |
Enallagma vesperum |
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| Ovipositing |
Dragonflies |
Black-Tipped Darner, ovipositing |
Aeshna tuberculifera |
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| Ovipositing |
Flies: Horse and Deer |
Black Horse Fly Laying Eggs |
Tabanus atratus |
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| Parasitism: Endoparasites |
Flies: Pyrgotid |
Pyrgotid Fly in genus Sphecomyiella |
Sphecomyiella valida |
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| Parasitism: Galls |
Wasps |
Cherry Gall on Oak |
Cynips sp. (agent) |
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| Parasitoid |
Flies: Big-Headed |
Big-Headed Fly in genus Cephalops |
Cephalops sp. |
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| Parasitoid |
Wasps |
Great Golden Digger Wasp at Burrow |
Sphex ichneumoneus |
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| Parasitoid |
Wasps |
Great Golden Digger Wasp with Prey |
Sphex ichneumoneus |
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| Parasitoid |
Wasps |
Sand wasp clearing her burrow |
Bicyrtes quadrifasciata |
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| Parthenogenesis |
Flies: Pointed-Winged |
Pointed-Winged Fly in Genus Lonchoptera |
Lonchoptera bifurcata |
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| Pollution |
Factories and mines |
Air Pollution at Oil Refinery, Ashland, KY |
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| Pond life |
Bugs |
Backswimmer |
Notonectidae |
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| Pond life |
Bugs |
Creeping Water Bug |
Pelocoris sp. |
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| Pond life |
Bugs |
Water Boatman nymph |
Corixidae |
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| Pond life |
Bugs |
Water Boatman photographed in a stream |
Sigara sp. |
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| Pond life |
Snakes |
Northern Water Snake, two views |
Nerodia sipedon |
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| Predation: Antlion on Ant |
Antlions |
Antlion Pits |
Myrmeleon sp. |
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| Predation: bird on
crustacean |
Gulls |
Greater Black-backed Gull with Spider Crab |
Larus marinus |
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| Predation: Bird on
Dragonfly |
Blackbirds |
Red-winged Blackbird (with Odonata) |
Agelaius phoeniceus |
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| Predation: bird on
dragonfly |
Tyrant flycatchers |
Masked Water-tyrant with dragonfly prey |
Fluvicola nengeta |
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| Predation: bird on fish |
Hawks |
Osprey perched with spread wings with fish |
Pandion haliaetus |
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| Predation: Bird on insect
larva |
Tyrant Flycatchers |
Eastern Phoebe with a grub in its beak |
Sayornis phoebe |
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| Predation: Dragonfly on
Butterfly |
Butterflies |
Monarch as prey of Dragonhunter |
Danaus plexipus |
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| Predation: Dragonfly on
Butterfly |
Dragonflies |
Dragonhunter with Monarch |
Hagenius brevistylus |
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| Predation: Fly on Bug |
Flies: Robber |
Robber Fly with Stink Bug |
Laphria sp. |
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| Predation: Fly on fly |
Flies: Dance |
Dance Fly attacks Crane Fly |
Empis deterra |
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| Predation: Fly on Fly |
Flies: Dung |
Golden Dung Fly (Yellow Dung Fly) 4 images |
Scatophaga stercoraria |
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| Predation: Fly on Fly |
Flies: Long-Legged |
Long-Legged Fly with tiny Dipteran prey |
Hydrophorus sp. |
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| Predation: Fly on unknown
Larva |
Flies: Long-Legged |
Long-legged Fly in subfamily Dolichopodinae |
Pelastoneurus sp. |
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| Predation: Katydid on
Wasp |
Grasshoppers, Crickets |
Conehead Katydid as wasp's prey |
Neoconocephalus sp. |
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| Predation: Mammal on Fish |
Carnivores |
Brown Bear (Grizzly Bear) eating Salmon |
Ursus arctos |
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| Predation: Mammal on Fish |
Carnivores |
Brown Bear (Grizzly Bear) fishing |
Ursus arctos |
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| Predation: Raptors on
Ducks |
Ducks, Geese, Swans |
Wood Duck female watching sky |
Aix sponsa |
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| Predation: Snake on Snake |
Snakes |
Juvenile Black Racer |
Coluber constrictor |
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| Predation: Spider on
Caterpillar |
Jumping Spiders |
Bold Jumping Spider, back, with prey |
Phidippus audax |
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| Predation: Spider on
Dragonfly |
Dragonflies |
Common Pondhawk, as spider prey |
Erythemis simplicicollis |
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| Predation: Spider on
Dragonfly |
Orb Weavers |
Black and Yellow Argiope with Ode prey |
Argiope aurantia |
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| Predation: Wasp on Spider |
Wasps |
Spider Wasp with Wolf Spider |
Tachypompilus ferrugineus |
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| Preening |
Anhingas |
Anhinga preening |
Anhinga anhinga |
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| Pupation, pupa |
Butterflies |
Monarch transparent chrysalis |
Danaus plexipus |
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| Rearing Young |
Camel family |
Vicuna mother nursing young + 3rd vicuna |
Vicugna vicugna |
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| Rearing Young |
Hoofed Mammals |
Mountain Goat mother with kid |
Oreamnos americanus |
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| Rearing Young |
Rails and Cranes |
American Coot, parents and young |
Fulica americana |
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| Rearing Young |
Seals and Sea Lions |
Mother Seal and pup, two views incl. nursing |
Phoca vitulina |
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| Reintroduced species |
Hoofed Mammals |
Bull elk with a group of cows, Kentucky |
Cervus elaphus |
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| Seascapes |
California |
Along the Great Highway, near Pacifica |
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| Seascapes |
Newfoundland |
Bull Head viewed from sea, with lighthouse |
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| Seascapes |
Newfoundland |
Seascape / Landscape, Cape St. Mary's |
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| Seascapes |
Newfoundland |
Seascape with Sheep, Newfoundland |
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| Social insects |
Ants |
Harvester Ants |
Pogonomyrmex sp. |
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| Sunsets |
Arizona |
Sunset, Saguaro National Park |
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| Sunsets |
Virginia |
Sunset over Assateague |
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| Tidal pools |
Sea Anemones |
Group of Aggregating Sea Anemones |
Anthopleura elegantissima |
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| Tundra |
Alaska |
Hiking Togiak National Wildlife Refuge |
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| Tundra |
Alaska |
Togiak NWR, Bristol Bay coastline |
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| Tundra |
Alaska |
Tundra Landscape, Southwest Alaska |
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| Tundra |
Yukon |
Mountain and tundra, Yukon territory |
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| Tundra dwellers |
Dragonflies |
Boreal Whiteface perched, Northwest Territories |
Leucorrhinia borealis |
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| Tundra dwellers |
Grouse |
White-tailed Ptarmigan, Yukon photograph |
Lagopus leucurus (leucura) |
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| Tundra dwellers |
Hoofed Mammals |
Caribou on Alaskan tundra |
Rangifer tarandus |
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| Tundra dwellers |
Jaegers and Skuas |
Long-tailed Jaeger |
Stercorarius longicaudus |
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| Tundra dwellers |
Other Birds |
American
Golden-Plover on tundra |
Pluvialis dominica |
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| Tundra dwellers |
Rodents |
Arctic Ground Squirrel on rocky slope |
Spermophilus parryii |
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| Winter scenes |
West Virginia |
Ice hangs from cliff, Audra State Park |
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