ML114441921
Herring x Glaucous-winged Gull (hybrid) Larus argentatus x glaucescens
Colaborador
Alex Lamoreaux Média deste colaborador Perfil
Data
Localização
Shearwater Journeys_24/08/18_Leg 4/6
Monterey, California, United States
Média deste local Lista Ilustrada- Idade e sexo
- Adulto, Sexo desconhecido - 1
- Comportamentos
- Voar
Detalhes da observação
Very early and unexpected. Identified in the field as a Herring (light mantle, light eye, pink legs, dark primaries), but reviewing downloaded photos revealed a very Thayer's-like (Iceland) primary pattern, both on the upperwing and underwing, which HERG x GWGU can also have. The wing pattern rules out a pure HERG. Brightening and saturating a closeup of the head (attached here) shows an orangish orbital ring - this should be red or purple (or inbetween) on ICGU, which is a more unlikely species in my opinion. Bill structure appears to fit better a hybrid better than ICGU, and overall size seemed fairly typical of HERG (and thus HERG x GWGU, which average larger than ICGU) compared to the WEGUs and CAGUs that were also in the chum line.
Informação técnica
- Modelo
- Canon EOS 7D
- Lente
- EF100-400mm f/4.5-5.6L IS II USM
- ISO
- 400
- Distancia focal
- 248 mm
- Flash
- Flash did not fire, auto
- f-stop
- f/5.6
- Velocidade do obturador
- 1/2000 sec
- Dimensões
- 4118 pixels x 2748 pixels
- Tamanho do ficheiro original
- 2.54 MB