ML471313451
American Herring x California Gull (hybrid) Larus smithsonianus x californicus
- 年齡
- 未確定
- 性別
- 未確定
影音備註
July 26 bird on left, July 1 bird in middle, and juvenile that follows July 26 bird on right.
觀察細節
Possible hybrids or backcrosses. One bird frequenting this location with two juveniles, one seen previously on July 1 at a Herring Gull rooftop breeding colony (no young or pair), initially ID'd as CAGU. Description here of July 1st bird, the other bird described on July 26 list. CAGU features: yellow legs, darker upperparts (more subtle than other individual), wingtip pattern, smaller size (larger than other individual, size of medium-small HERG) HERG features: orange orbital ring and gape, slightly paler iris with intricate pattern - both only seen from closeup photos, thus initial ID as CAGU Relatively larger size, larger head, and paler upperparts may be intermediate features but are also associated with California spp. albertaensis.
技術資訊
- 次方
- 2960 pixels x 1833 pixels
- 原始檔案大小
- 3.17 MB