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Bird Identification Q&A
Another Large Gull SP., Tainan County, Taiwan: taimyrensis or mongolicus?
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<blockquote data-quote="SteveMM" data-source="post: 3525684" data-attributes="member: 130392"><p>Thanks again for all these links, Jan, they help enormously.</p><p></p><p>It's the wide range of variation possible in the <em>taimyrensis </em>here that causes me all the confusion, with some surprisingly white individuals. It looks like wear <em>is </em>the most useful way of picking out <em>mongolicus </em>at this time of year, as it was with the only real definite I have found in this recent period of looking (first bird attached, on the left with another <em>taimyrensis</em>).</p><p></p><p>Out of interest, I also have the second bird attached aged as a first-winter <em>taimyrensis</em>. Malling Olsen and Larsson states that some <em>taimyrensis </em>replace juvenile coverts with adult-type grey feathers, which is what seems to be happening here. Or have I got the age wrong?</p></blockquote><p></p>
[QUOTE="SteveMM, post: 3525684, member: 130392"] Thanks again for all these links, Jan, they help enormously. It's the wide range of variation possible in the [I]taimyrensis [/I]here that causes me all the confusion, with some surprisingly white individuals. It looks like wear [I]is [/I]the most useful way of picking out [I]mongolicus [/I]at this time of year, as it was with the only real definite I have found in this recent period of looking (first bird attached, on the left with another [I]taimyrensis[/I]). Out of interest, I also have the second bird attached aged as a first-winter [I]taimyrensis[/I]. Malling Olsen and Larsson states that some [I]taimyrensis [/I]replace juvenile coverts with adult-type grey feathers, which is what seems to be happening here. Or have I got the age wrong? [/QUOTE]
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Birding
Bird Identification Q&A
Another Large Gull SP., Tainan County, Taiwan: taimyrensis or mongolicus?
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