Effect of brood mixing on location and survivorship of juvenile Canada geese

The establishment of mixed broods in populations of Canada geese,Branta canadensishas been a subject of controversy. The possible adaptive significance of this behaviour was evaluated as it relates to the survivorship of goslings. Distance of goslings from the adults, gosling status (i.e. natural or...

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Veröffentlicht in:	Animal behaviour 1997-09, Vol.54 (3), p.503-507
Hauptverfasser:	NASTASE, ANTHONY J, SHERRY, DAWN A
Format:	Artikel
Sprache:	eng
Schlagworte:	aggregation Animal ethology Animal reproduction Aves Biological and medical sciences Brackish Branta canadensis Freshwater Fundamental and applied biological sciences. Psychology goslings Marine maternal behavior mortality Psychology. Psychoanalysis. Psychiatry Vertebrata Wildfowl
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Beschreibung
Zusammenfassung:	The establishment of mixed broods in populations of Canada geese,Branta canadensishas been a subject of controversy. The possible adaptive significance of this behaviour was evaluated as it relates to the survivorship of goslings. Distance of goslings from the adults, gosling status (i.e. natural or adopted) and survivorship to 5 years were measured to predict the value of aggregation behaviour. Spatial data indicated that adopted goslings were further from female adults than natural goslings. Recapture data indicated that mixed broods improved the survivorship of natural goslings.
ISSN:	0003-3472 1095-8282
DOI:	10.1006/anbe.1996.0441