A review of bufflehead sex and age criteria with notes on weights
Wildfowl
2542_Henny.pdf
By: Charles J. Henny, J.L. Carter, and Barbara J. Carter
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Abstract
Summary: Buftleheads Bucephala albeola were collected along the Oregon coast during the hunting season. Birds were first sexed and aged upon cloacal and internal characteristics. Results were then compared with data derived from wing plumage. A small change was made in Carney's (1964) wing plumage key to improve its accuracy. Although only a few studies have been made of Bufflehead weights, it seems that in at least several of these, some immature males have been included in the female category. This mistake has probably resulted from the extremely small penis in the immatures. The foot web length shows potential as a simple sexing criterion during the fall and winter for immatures which are the most difficult to sex under field conditions.
Suggested Citation
Henny, C.J., Carter, J., Carter, B.J., 1981, A review of bufflehead sex and age criteria with notes on weights: Wildfowl, v. 32, p. 117-122.
ISSN: 2052-6458 (online)
| Publication type | Article |
|---|---|
| Publication Subtype | Journal Article |
| Title | A review of bufflehead sex and age criteria with notes on weights |
| Series title | Wildfowl |
| Volume | 32 |
| Year Published | 1981 |
| Language | English |
| Contributing office(s) | Patuxent Wildlife Research Center |
| Description | 117-122 |
| Larger Work Type | Article |
| Larger Work Subtype | Journal Article |
| Larger Work Title | Wildfowl |
| First page | 117 |
| Last page | 122 |