Planet of Birds

Anhinga (Anhinga anhinga) Science Article 4 abstract Breeding behavior and sex roles of nesting Anhingas were studied in San Blas, Nayarit, Mexico during July and August 1975. The Anhingas nested in a mixed species colony of egrets, herons, and cormorants. The egg-laying period for Anhingas was 21 days. Anhingas built nests in the open areas […]

Anhinga (Anhinga anhinga) Science Article 1 abstract Anhingas (Anhinga anhinga) commonly spread their wings and perch in the sun, ostensibly to dry wettable feathers (Bent 1922, Life histories of North American Petrels and Pelicans and their allies, Washington,U .S. Natl. Mus. Bull. 230). The flight feathers themselves appear not to become appreciably wet, but the […]

Anhinga (Anhinga anhinga) Science Article 3 abstract All 10 Wood Stork eggs collected at Merritt Island National Wildlife Refuge in 1973 contained residues of DDE (geometric mean 4.0 ppm wet weight) and PCBs (1.2 ppm). Nine other organochlorines were found at lower frequencies in the eggs. Eggshells from the recent period were 8.9% thinner (P […]

Anhinga (Anhinga anhinga) Science Article 2 abstract Metabolic rates and body temperatures of four captive Anhingas(Anhinga anhinga) were measured over a range of ambient temperatures. In addition,Anhingas were observed in the field in an attempt to correlate the frequencyof behaviors, such as wing-spreading, with environmental conditions, such as theintensity of solar radiation and ambient temperature. […]