La Tour du Valat

Institut de recherche pour la conservation des zones humides méditerranéennes

Titre :	A portable system for continuous monitoring of bird nests using digital video recorders
Auteurs :	Andrew J. Pierce, Auteur ; Korakoch Pobprasert, Auteur
Type de document :	Article
Dans :	Journal of Field Ornithology (78(3) SEP 2007)
Article en page(s) :	322-328
Langues:	Anglais
Résumé :	A variety of photographic methods have been described for monitoring nest predation. All have limitations for studying active nests in remote situations, such as size, expense, volume of data recorded, and types of trigger mechanisms. We developed a digital video surveillance system using infrared cameras to monitor predation at bird nests. The main advantage of this system over other video recorders is the small size of the recorder that can run continuously at 29 frames/s for more than 3 days. The recorder's built-in monitor makes it more transportable and allows for easy setup. Digital data is compact, can be reviewed quickly, and requires less physical storage space than videotapes. We recorded nest predation by mammals, birds, and snakes as well as egg and nestling losses not caused by predation. System failure rates were low and the total cost was comparable to ($700 US) video cassette recorders that are often used to monitor nests.

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