Black-tailed Gull (crassirostris) / ウミネコ / 괭이갈매기
(last update: December 2015)
Black-tailed Gull (crassirostris) B75 14CY, February 23 2013, Choshi, Japan. Picture: Akimichi Ariga.
Please visit Akimichi's blog.
Left leg: plastic yellow ring white code B75. No metal ring. On the right leg it has a geo-locator (for positioning the bird with GPS, in Japan called Jioroketa).
Yellow B75 has a contamination with oil from the head over the abdomen.
If you observe any Black-tailed Gull with yellow ring, please contact:
Hokkaido University doctoral graduate Hirata Kazuhiko
The following information is relevant: