Age-specific Breeding in Emperor Geese

Joel A. Schmutz

doi:10.1676/0043-5643(2000)112[0261:ASBIEG]2.0.CO;2

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Joel A. Schmutz^*

^*Alaska Biological Science Center, Biological Resources Division, U.S. Geological Survey, 1011 East Tudor Road, Anchorage, Alaska 99503; joel_schmutz@usgs.gov

Abstract

I studied the frequency with which Emperor Geese (Chen canagica) of known age were observed breeding on the Yukon-Kuskokwim Delta, Alaska. No one- or two-year old geese were observed on nests. Three-year old geese bred at a lower rate than four-year old geese. These data suggest that patterns of age-specific breeding in Emperor Geese are similar to other sympatrically nesting, large bodied geese [Greater White-fronted Geese (Anser albifrons)] but delayed relative to smaller bodied geese [Cackling Canada Geese (Branta canadensis minima) and Pacific Black Brant (B. bernicla nigricans)].

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Joel A. Schmutz "Age-specific Breeding in Emperor Geese," The Wilson Bulletin 112(2), 261-263, (1 June 2000). https://doi.org/10.1676/0043-5643(2000)112[0261:ASBIEG]2.0.CO;2

Received: 23 October 1999; Accepted: 1 February 2000; Published: 1 June 2000

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