Utilisation de la photographie numérique pour étudier l’étendue de la mue chez les oiseaux de mer nicheurs

Ostrich is co-published by NISC (Pty) Ltd and Informa UK Limited (trading as Taylor & Francis Group) Moult data from wild birds traditionally has been collected from dead birds (e.g. museum specimens, road casualties or caught on fishing gear; Craig 1983; Ramos et al. 2009) or from live birds in the hand (e.g. during ringing; Ginn and Melville 1983). Photographs of birds in flight also have been used to score wing moult (Snyder et al. 1987), and this has been greatly facilitated by the development of digital photography and high-speed autofocus lenses (e.g. Howell 2010, Zuberogoitia et al. 2013, Vieira et al. 2017). Photography of birds in flight allows large sample sizes with little if any disturbance to the birds, but creates challenges regarding the independence of samples (given the potential for multiple images of the same individual) and typically precludes tracking moult in known individuals (Vieira et al. 2017). Although there are some exceptions, most seabirds do not moult while breeding (Bridge 2006). As a result, data on Short Note