Researcher measuring a 2.6 gram Stripe-throated Hermit hummingbird wing as part of a pollination study, rainforest at the "La Selva" research station in Puerto Viejo de Sarapiqui, Costa Rica

phaethornis striigularis natural reserve tropical rainforest scientific research scientist researcher naturalist ornithology adult man person alone hand measure carry catch outdoor profile shot day measuring instrument nectarivore march month phaethornis ruler la selva biological station stripe throated hermit phaethornis striigularis nature reserves nature reserve tropical rain forests ombrophile forest shade plants rain forest rainforest rain forests ombrophile forests scientific researches scientific studies scientific study scientists researchers naturalists ornithologist ornithologists ornithological ornithologicals adults men human beings persons human being human presence human presences human humans single lonely only solo one lone hands measured measuring transport hold carried carrying held holding transporting transported transportation caught catching arrest arrested arresting outdoors outsides outside profile sights profile sight profile shots profile view profile views side view days daytime measuring device measuring devices measuring instruments measuring tool measuring tools nectarivores least concern species rulers estación biológica la selva environment protection environment management biodiversity management environment tropical forest forest area science discipline stage of development individual enumeration morphology zoology morphology organism behavior shot ambiance material phytophage diet pattern species convention on international trade in endangered species of wild low risk trochilidae apodiformes aves sauropsida tetrapoda tetrapodomorpha rhipidistia sarcopterygii euteleostomi gnathostomata vertebrata chordata deuterostomia coelomata bilateria metazoa opisthokonta eukaryota stationary school equipment education heredia province costa rica central america america hermit phaethornis sp hummingbird apodiforme bird sauropsid vertebrate chordate wild animal animal