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Past and present trophic position and decadal changes in diet of Yellow-legged ...
Pedro, Patricia I.; Ramos, J. A.; Neves, Verónica C.; Paiva, Vitor H.This study evaluates the trophic position of adult Yellow-legged Gulls Larus michahellis atlantis resident in the Azores archipelago in the past (1921–1928) and in the present (2009–2010), and analyses the decadal variation in the diet of breeding birds from the 1990s to the 2000s for three main colonies (Topo Islet, Baixo Islet and Mistério da Prainha). Using mixing models, we compared stable isotope signature...
Predation on roseate tern eggs by European starlings in the Azores
Neves, Verónica C.; Panagiotakopoulos, Sotirios; Ratcliffe, NormanPredation by the European starling (Sturnus vulgaris) was the main reason for roseate tern (Sterna dougallii) hatching failure on Vila islet, Azores, one of the species’ largest colonies in Europe. Observations showed that single or small groups of starlings were responsible for predation events and that tern nest defense against starlings was generally ineffective. Daily nest survival rate was 94.2% in 2002 an...
Diet of mid-Atlantic Sowerby’s beaked whales Mesoplodon bidens
Pereira, José N.; Neves, Verónica C.; Clarke, D. C.; Prieto, Rui; Silva, Mónica A.; Cascão, Irma; Oliveira, Cláudia I.; Cruz, Maria J.Copyright © 2011 Elsevier Ltd. All rights reserved. ; The first mid-Atlantic diet of Mesoplodon beaked whales is presented, from ten Sowerby's Mesoplodon bidens stranded in the Azores region between 2002 and 2009. This doubles the worldwide number of stomachs sampled, and reveals new feeding habits for this species. The mean number of prey items per stomach was 85±89 (range: 12–238), with fish accounting for 9...
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