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La Tour du Valat

Institut de recherche pour la conservation des zones humides méditerranéennes

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Titre :	A picture is worth a thousand words: the application of camera trapping to the study of birds
Auteurs :	Timothy G. O'Brien, Auteur ; Margaret F. Kinnaird, Auteur
Type de document :	Article
Dans :	Bird Conservation International (18 SEP 2008)
Article en page(s) :	S144-S162
Langues:	Anglais
Résumé :	This study reviews the use of remotely triggered still cameras, known as camera traps, in bird research and Suggests new methods useful for analyzing camera trap data. Camera trapping may be most appropriate for large, ground-dwelling birds, such as cracids and pheasants. Recent applications include documentation of occurrence of rare species and new species records, nest predation studies and behavioural studies including nest defence, frugivory, seed dispersal, and activity budgets. If bird postures are analyzed, it may be possible to develop behavioural time budgets. If birds are marked or individually identifiable, abundance may be estimated through capture-recapture methods typically used for mammals. We discourage use of relative abundance indices based on trapping effort because of the difficulty of standardizing surveys over time and space. Using the Great Argus Pheasant Argus argusianus, a cryptic, terrestrial, forest bird as an example, we illustrate applications of occupancy analysis to estimate proportion Of Occupied habitat and finite mixture models to estimate abundance when individual identification is not possible. These analyses are useful because they incorporate detection probabilities

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