Black-tailed Gull (crassirostris) / ウミネコ / 괭이갈매기

(last update: December 2015)

Black-tailed Gull (crassirostris) code? 1st cycle (1CY), December 23 2012, Choshi, Japan. Picture: Akimichi Ariga.

Please visit Akimichi's blog.

This bird has a metal ring on the right leg and a red balloon in its wing. It seems to have a wing-tag? If this is a wing-tag, the code was not read. Anyway, this must be a bird hatched in 2012.

If you observe any Black-tailed Gull with yellow ring, please contact:

Hokkaido University doctoral graduate Hirata Kazuhiko
Yubinbango 041-8611 Hakodate port town 3-1-1
Hokkaido University Graduate School of Fisheries Sciences resource ecology area
Khirata < at > Fish.Hokudai.Ac.Jp

The following information is relevant:
　　1. code on the ring and the colour of the ring
　　2. observation date and time
　　3. observation location (latitude and longitude in seconds if possible)
　　4. observer name, contact information
　　5. photos