Martin Dohrn / Army ant bivouac made entirely from body mass of migrating ants {Eciton burchelli} Santa Rosa NP, Guanacaste, Costa Rica, Central America
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Doug Wechsler / Giant (Marine) toad, Guanacaste NP, Costa Rica
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John Cancalosi / Neotropical bird eating snake (Pseustes poecilonotus) Guanacaste National park, Costa Rica
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John Cancalosi / Boa Constrictor (Boa constrictor) shedding skin from head. Guanacaste National Park, Costa Rican tropical rainforest.
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John Cancalosi / Boa Constrictor (Boa constrictor) shedding skin from head. Guanacaste National Park, Costa Rican tropical rainforest.
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John Cancalosi / Boa Constrictor (Boa constrictor) shedding skin from head. Guanacaste National Park, Costa Rican tropical rainforest.
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John Cancalosi / Boa Constrictor (Boa constrictor) shedding skin from head. Guanacaste National Park, Costa Rican tropical rainforest.
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John Cancalosi / Boa Constrictor (Boa constrictor) shedding skin from head. Guanacaste National Park, Costa Rican tropical rainforest.
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John Cancalosi / Boa Constrictor (Boa constrictor) shedding skin from head. Guanacaste National Park, Costa Rican tropical rainforest.
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John Cancalosi / Boa Constrictor (Boa constrictor) shedding skin from head. Guanacaste National Park, Costa Rican tropical rainforest.
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Kevin Schafer / Collared Peccary (Tayassu tajacu) foraging in understory at night, Guanacaste National Park, Costa Rica
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Ingo Arndt / Treehopper (Membracidae) close up portrait, Santa Rosa National Park, Guanacaste, Costa Rica
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Ingo Arndt / Treehopper (Membracidae) close up portrait, Santa Rosa National Park, Guanacaste, Costa Rica
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Doug Wechsler / Giant toad (Bufo marinus) on leaf litter in tropical rainforest, Guanacaste NP, Costa Rica
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Doug Wechsler / Owl butterfly in tropical forest 800m {Caligo atreus} Guanacaste NP, Costa Rica
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Fabio Liverani / Bats roosting in cave, Santa Rosa NP. Guanacaste, Costa Rica
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Fabio Liverani / Boiling mud, Las Pailas sector, Rincon de la Vieja NP. Guanacaste, Costa Rica
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Fabio Liverani / Boiling mud, Las Pailas sector, Rincon de la Vieja NP. Guanacaste, Costa Rica
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Fabio Liverani / Boiling mud, Las Pailas sector, Rincon de la Vieja NP. Guanacaste, Costa Rica
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Fabio Liverani / Rincon de la Vieja National Park, Guanacaste, Costa Rica
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Fabio Liverani / Dan Jenzen Butterfly larvae project, Guanacaste NP. Santa Rosa, Costa Rica. 2005
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Fabio Liverani / Dan Jenzen Butterfly larvae project, Guanacaste NP. Santa Rosa, Costa Rica. 2005
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Fabio Liverani / Leafcutter ants {Atta sp} carrying leaves, Rincon de la Vieja NP. Guanacaste, Costa Rica
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Martin Dohrn / Army ant bivouac made entirely from body mass of migrating ants {Eciton burchelli} Santa Rosa NP, Guanacaste, Costa Rica, Central America
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Martin Dohrn / Army ants dragging centipede prey back to nest {Eciton burchelli} Santa Rosa NP, Guanacaste, Costa Rica, Central America
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Martin Dohrn / Army ants dragging centipede prey back to nest {Eciton burchelli} Santa Rosa NP, Guanacaste, Costa Rica, Central America
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Michael & Patricia Fogden / Steely-vented Hummingbird (Amazilia saucerrottei) male perching in Stachytarphera in dry forest, Guanacaste National Park, Costa Rica
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Michael & Patricia Fogden / Mantled Howler Monkey (Alouatta palliata) feeding, dry forest, Guanacaste National Park, Costa Rica
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Mark Moffett / Ant (Pseudomyrmex sp) group occupying acacia tree, Guanacaste, Costa Rica
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Martin Dohrn / Santa Rosa National Park Guanacaste Conservation Area north west Costa Rica, Central America
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John Cancalosi / Indigo snake (Drymarchon corais) among leaves. Guanacaste NP, Costa Rica
