Kumlien's Iceland Gull Larus glaucoides kumlieni
February 13th 2004 Choshi Chiba Japan
This classic adult Kumlien's Iceland Gull was found on our usual seawall where some Thayer's Gulls were regularly found among thousands of Vega Gulls. It was terrifically typical in all respects, and we had nothing to worry about. Its Thayer's-like basic structure formed by short bill, short neck, and short legs was familiar to me, but seemed to be a little more extreme.
Note the typical 5 gray markings on outer primaries, from P10 to P6.
The legs look surprisingly short, especially when its belly feathers swell down. The primary projection beyond the tail is not extremely long, but it is still longer than the bill length and quite normal in kumlieni.