ML471312831
American Herring x California Gull (hybrid) Larus smithsonianus x californicus
Хувь нэмрээ оруулагч
Огноо
Байршил
- Нас
- Тодорхойлоогүй
- Хүйс
- Тодорхойлоогүй
Медиа тэмдэглэл
The bird seen on July 1st in the back, the July 26 bird in front
Ажиглалтын дэлгэрэнгүй
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.
Техникийн мэдээлэл
- Хэмжээсүүд
- 1593 pixels x 1000 pixels
- Анхны файлын хэмжээ
- 750.34 KB