Researchers picking up pollen with a brush from the beak of a Rufous-tailed hummingbird as part of a pollination study, rainforest at the "La Selva" research station in Puerto Viejo de Sarapiqui , Costa Rica

amazilia tzacatl natural reserve tropical rainforest scientific research sample scientist researcher naturalist ornithology adult man person hand pollen carry catch outdoor day nectarivore three quarter shot net pair march month take amazilia brush rufous tailed hummingbird amazilia tzacatl la selva biological station nature reserves nature reserve tropical rain forests ombrophile forest shade plants rain forest rainforest rain forests ombrophile forests scientific researches scientific studies scientific study samples specimen specimens sampling samplings scientists researchers naturalists ornithologist ornithologists ornithological ornithologicals adults men human beings persons human being human presence human presences human humans hands pollens transport hold carried carrying held holding transporting transported transportation caught catching arrest arrested arresting outdoors outsides outside days daytime nectarivores three quarter views three quarter view three quarter shots three quarter sight three quarter sights three quarter length nets duet pairs duets 2 two least concern species taking taking away brushes estación biológica la selva environment protection environment management biodiversity management environment tropical forest forest area science analysis discipline stage of development individual morphology zoology morphology organism morphology botany behavior shot ambiance phytophage diet pattern species object material enumeration 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 tool hummingbird amazilia sp hummingbird apodiforme bird sauropsid vertebrate chordate wild animal animal heredia province costa rica central america america