Brown, Charles R.; Brown, Mary Bomberger - In: Behavioral Ecology 14 (2003) 4, pp. 569-575
By using a sample of over 800 male cliff swallows (Petrochelidon pyrrhonota) that died during a rare climatic event in our Nebraska study area in 1996, we investigated how testis size was related to body size, age, parasite load, a bird's past colony-size history, and spleen size. Testis volume...