Extraordinary Size and Survival of American Black Duck, Anas rubripes, Broods

Extraordinary Size and Survival of American Black Duck, Anas rubripes, Broods

Two female American Black Ducks (Anas rubripes) were initially observed during June 1982 with 20 Class Ib or 18-22 Class Ia-b ducklings in two wetlands in Hancock County, Cherryfield, Maine. Fifteen of 20 ducklings (75%) in one brood and 16 of 18-22 ducklings (72-89%) in the other brood survived to...

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Veröffentlicht in:Canadian field-naturalist 2004-01, Vol.118 (1), p.129-129
Hauptverfasser: Longcore, Jerry R., McAuley, Daniel G.
Format: Artikel
Sprache:eng
Schlagworte:
Anas rubripes
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Beschreibung
Zusammenfassung:Two female American Black Ducks (Anas rubripes) were initially observed during June 1982 with 20 Class Ib or 18-22 Class Ia-b ducklings in two wetlands in Hancock County, Cherryfield, Maine. Fifteen of 20 ducklings (75%) in one brood and 16 of 18-22 ducklings (72-89%) in the other brood survived to fledge. These large broods probably resulted from post-hatch brood amalgamation.
ISSN:0008-3550
DOI:10.22621/cfn.v118i1.897