Christian Ziegler / Red-eyed Tree Frog (Agalychnis callidryas) three males sitting on a stem, Soberania National Park, Panama

Cyril Ruoso / Red-eyed Tree Frog (Agalychnis callidryas) eggs on leaf, Barro Colorado Island, Panama

Christian Ziegler / Red-eyed Tree Frog (Agalychnis callidryas) metamorphose being persued by predatory spider, Soberania National Park, Panama

Christian Ziegler / Red-eyed Tree Frog (Agalychnis callidryas) eggs that have dried up during drought, Soberania National Park, Panama

Christian Ziegler / Red-eyed Tree Frog (Agalychnis callidryas) egg mass with four day old embryos, Soberania National Park, Panama

Christian Ziegler / Red-eyed Tree Frog (Agalychins callydrias) eggs with developing embryos inside, Soberania National Park, Panama

Christian Ziegler / Rhinoceros Spearbearer (Copiphora rhinoceros) feeding on developping eggs of the Red-Eyed Tree Frog (Agalychnis callidryas) initiation spontanious hatching behavior of the embryos, La Selva, Costa Ric...

Christian Ziegler / Red-eyed Tree Frog (Agalychnis callidryas) on a leaf hanging over a pond in La Selva, Panama

Christian Ziegler / Red-eyed Tree Frog (Agalychnis callydrias) eggs with developing embryos beginning to drop into pond below for hatching, Soberania Natioanl Park, Panama

Christian Ziegler / Red-eyed Tree Frog (Agalychnis callydrias) eggs with developing embryos beginning to drop into pond below for hatching, Soberania Natioanl Park, Panama

Christian Ziegler / Red-eyed Tree Frog (Agalychnis callidryas) sleeping on a leaf overhanging a pond in La Selva, Panama

Christian Ziegler / Foam-nest Frog (Leptodactylus sp) feeding on a Red-eyed Tree Frog (Agalychnis callidryas) at a mating pond, Soberania National Park, Panama

Christian Ziegler / Red-eyed Tree Frog (Agalychnis callidryas) on a leaf, in the daytime this species is well camouflaged when it folds all colorful parts under, Soberania National Park, Panama

Christian Ziegler / Red-eyed Tree Frog (Agalychnis callidryas) on a leaf, in the daytime this species is well camouflaged when it folds all colorful parts under, Soberania National Park, Panama

Christian Ziegler / Red-eyed Tree Frog (Agalychnis callidryas) on a leaf, in the daytime this species is well camouflaged when it folds all colorful parts under, Soberania National Park, Panama

Christian Ziegler / Red-eyed Tree Frog (Agalychnis callidryas) egg clutches are stuck to the underside of leaves overhanging water when the tadpoles hatch they drop into the water below, Barro Colorado Island, Panama

Christian Ziegler / Red-eyed Tree Frog (Agalychnis callidryas) pair mating in amplexus, Soberania National Park, Panama

Christian Ziegler / Red-eyed Tree Frog (Agalychnis callidryas) close-up of eye, sitting on a leaf, Soberania National Park, Panama

Christian Ziegler / Red-eyed Tree Frog (Agalychnis callidryas) sitting on leaf in the mid canopy, Soberania National Park, Panama

Christian Ziegler / Red-eyed Tree Frog (Agalychnis callidryas) different aged eggs on the same leaf, one and four days old, Soberania National Park, Panama

Christian Ziegler / Parrot Snake (Leptophis ahaetulla) eating egg clutch of Red-eyed Tree Frog (Agalychnis callidryas) tadpoles hatching, Soberania National Park, Panama

Christian Ziegler / Parrot Snake (Leptophis ahaetulla) eating egg clutch of Red-eyed Tree Frog (Agalychnis callidryas) tadpoles hatching, Soberania National Park, Panama

Christian Ziegler / Parrot Snake (Leptophis ahaetulla) approaching Red-eyed Tree Frog (Agalychnis callidryas), Soberania National Park, Panama

Christian Ziegler / Red-eyed Tree Frog (Agalychnis callidryas) tadpole leaving the safety of a shallow pond, Soberania National Park, Panama

Christian Ziegler / Red-eyed Tree Frog (Agalychnis callidryas) shadow on leaf, Soberania National Park, Panama

Christian Ziegler / Red-eyed Tree Frog (Agalychnis callidryas) climbing on red bark, Soberania National Park, Panama

Christian Ziegler / Red-eyed Tree Frog (Agalychnis callidryas) series of early induced hatching, five day old egg clutch, by manual touch, Soberania National Park, Panama

Christian Ziegler / Red-eyed Tree Frog (Agalychnis callidryas) series of early induced hatching, five day old egg clutch, by manual touch, Soberania National Park, Panama

Christian Ziegler / Red-eyed Tree Frog (Agalychnis callidryas) pair in amplexus, Soberania National Park, Panama

Christian Ziegler / Cat-eyed Snake (Leptodeira septentrionalis) eating egg clutch of Red-eyed Tree Frog (Agalychnis callidryas) some tadpoles escaping through early hatching, Soberania National Park, Panama

Christian Ziegler / Red-eyed Tree Frog (Agalychnis callidryas) egg clutch under palm frond overhanging pond, Soberania National Park, Panama

Christian Ziegler / Red-eyed Tree Frog (Agalychnis callidryas) satellite male is sitting on egg laying pair to fertilize eggs, Soberania National Park, Panama

Christian Ziegler / Red-eyed Tree Frog (Agalychnis callidryas) detail of eye, Soberania National Park, Panama

Christian Ziegler / Red-eyed Tree Frog (Agalychnis callidryas) egg clutch, four days old, Soberania National Park, Panama

Christian Ziegler / Red-eyed Tree Frog (Agalychnis callidryas) backlit egg clutch, four days old, Soberania National Park, Panama

Christian Ziegler / Red-eyed Tree Frog (Agalychnis callidryas) on Heliconia flower, Soberania National Park, Panama

Mark Moffett / Red-eyed Tree Frog (Agalychnis callidryas) sitting on a leaf, Barro Colorado Island, Panama

Norbert Wu / Red-eyed Tree Frog (Agalychnis callidryas) nocturnal, red eyes help it see in darkness, Panama rainforest

Norbert Wu / Red-eyed Tree Frog (Agalychnis callidryas) developing eggs laid on leaf above water, Panama Rainforest

Norbert Wu / Red-eyed Tree Frog (Agalychnis callidryas) developing eggs laid on leaf above water, Panama Rainforest

Norbert Wu / Red-eyed Tree Frog (Agalychnis callidryas) pair on leaf, nocturnal, red eyes help it see in darkness, Panama

Norbert Wu / Red-eyed Tree Frog (Agalychnis callidryas) portrait on red leaf, nocturnal, red eyes help it see in darkness, Panama rainforest

Norbert Wu / Red-eyed Tree Frog (Agalychnis callidryas) nocturnal, red eyes help it to see in the dark, rainforest, Panama