This video from the USA says about itself:
Careers with Birds: Interview with Kim Bostwick
10 Jan 2014
Kim Bostwick’s ground-breaking research on manakins has been featured in National Geographic Magazine and she’s currently the curator of the Bird and Mammal collections at the Cornell Lab of Ornithology‘s Museum of Vertebrates. Kim started as a young animal lover in rural Vermont and has since spent her life studying birds. Visit the Young Birders Network website (www.youngbirdersnetwork.net) to read more about careers in ornithology.
The Cornell Lab of Ornithology writes about Ms Bostwick:
How a Bird Sings With Its Wings: Dr. Kim Bostwick’s field research centers on the Club-winged Manakin, a bird that makes a remarkable, high-pitched hum in one of the strangest ways imaginable. She discovered the secret over the course of many years, using experiments and high-speed video, and her website tells the story in fascinating detail and great video.
Among the first things that stand out about golden-collared manakins, a bird found in Panama and western Colombia, are the acrobatics of male adults during breeding season. Males also emit a particular call, the ‘chee-poo’, to attract females. In a new paper published in Animal Behaviour, Smithsonian researchers Ioana Chiver and Barney Schlinger explore the role of androgens — male hormones — in the expression of this vocal behavior, by administering testosterone to females and juvenile males: here.