La Tour du Valat

Article

Comparison of survey methods for wintering grassland birds

J. P. Roberts, Auteur ; G. D. Schnell, Auteur

Dans Journal of Field Ornithology (77(1) WIN 2006)

Although investigators have evaluated the efficacy of survey methods for assessing densities of breeding birds, few comparisons have been made of survey methods for wintering birds, especially in grasslands. In winter, social behavior and spatia[...]

Plus d'information...

Ajouter au panier