Biologia reproductiva y alimenticia de la paloma antartica

Breeding and feeding biology of Greater Sheathbill at Antarctica and Argentine coast. Breeding chronology. Egg morphology and chicks growth (weight, wing lenght, tarsus lenght, bill lenght). Breeding sucess. Nest characteristics and daily weather conditions for the analiysis of nest quality in relation to breeding sucess. Feeding tactics, feeding times, activity and energetic budget. Displacements, pursues, kleptoparasitic behaviours. Periodic sampling of food items for the analysis of caloric contents and the estimation of their availability.