La Tour du Valat

Institut de recherche pour la conservation des zones humides méditerranéennes

Titre :	Return rates of banded granivores in relation to band color and number of bands worn
Auteurs :	J. Verner, Auteur ; D. Breese, Auteur ; K. L. Purcell, Auteur
Type de document :	Article
Dans :	Journal of Field Ornithology (71(1) WIN 2000)
Article en page(s) :	117-125
Langues:	Anglais
Résumé :	We tested the null hypotheses of (1) no effect of band color and (2) no effect of number of bands worn on annual recapture rates of birds on their winter range. Results are reported from four species of granivores-Spotted Towhee (Pipilo maculatus), Golden-crowned Sparrow (Zonotrichia atricapilla), White-crowned Sparrow (Z. leucophrys), and Dark-eyed Junco (Junco hyemalis). We found no effect of die number of bands worn on return rates of these species, nor did we detect an effect of band color on return rates. In the latter case. however, the power of our tests was low, and some results hinted at possible effects of color, especially yellow bands on Golden-crowned Sparrows.

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