West-central and Northwest Thailand, Feb/March 2016 |
From February 21 - March 05, 2016, Sheridan, Willlie Sekula and I spent fifteen days in the west-central, north-central, and northwest parts of Thailand, expertly led by Dave Sargeant of Chiang Mai.
We visited Pak Thale, Laem Pak Bia, Nong Pla Lai,
Kaeng Krachan, Bueng Boraphet, Mai Ping, Doi Inthanon, Mae Taeng, Chiang Dao, Fang, Doi Lang, and Doi Ang Kang.
Common Tern (Sterna hirundo). c. 90% of the birds showed no visible molt boundaries in the primaries while at rest; when seen in flight most did have a molt boundary at c. P2-P3 but none beyond that. For a few individuals seen at rest there was a molt gap evident between P9/P10 orP8/P9:
There were at least two individuals that appeared to be darker-mantled than the others; here is one rear left, sitting:
