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| Jeff Poklen | profile | all galleries >> Gulls >> Large White-headed Gull Comparisons, California Central Coast | tree view | thumbnails | slideshow |
 Western Gull (front) with 1st cycle Glaucous Gull |
 Herring Gulls, both 1st cycle |
 front to rear: adult Herring Gull, 1st cy Herring Gull, adult Western Gull |
 Thayer's Gull (rear) with Herring Gull, both 1st cycle |
 California Gull (front) with Thayer's Gull, both 1st cycle |
 Front to rear: 1st cy Herring Gull, 1st cy Thayer's Gull, 2nd cy Glaucous-winged Gull |
 Left to right: 1st cycle thayer's Gull, presumed Glaucous-winged x Western Gull, 1st cycle |
 Left to right: adult Western Gull, 1st cycle Thayer's Gull |
 Left to right: 3rd cycle & 2nd cycle Herring Gulls |
 Front to rear: Herring Gull, 2nd cycle with possible GW x WEGU backcross |
 presumed GW x WEGU (left) & GWGU, both 1st cycle |
 top to bottom: Western, Thayer's, Glaucous-winged, all basic adults |
 THGU (right) with presumed GW x WEGU, both basic adults |
 pale-eyed Western gull, 2nd cycle with adult Herring Gull |
 Front to rear: probable adult GW x WEGU with possible 2nd cycle GW x HERG |
 presumed GW x HERG (left) with WEGU, both basic adult |
 left to right: GW x HERG, GWGU, GW x WEGU, all adults |
 front to rear: 1st cy GWGU, 1st cy THGU, adult WEGU |
 GWGUs, WEGUs and GW x WE hybrids |
 Herring Gull (center) with HERGs & THGUs (#1 of 2), all adults |
 Herring Gull (front) with THGU, both adults (#2 of 2) |
 Thayer's Gull (center) with Herring Gulls, all adults |
 HERG, ad. Note head/bill structure & bill color similar to ad. THGU |
 2 adult Western Gulls (left) with adult Herring Gull (right) |
 Primary patterns of 3 adult Thayer's Gulls |
 Primary patterns of adult HERG & THGU - P10 on HERG not fully grown |
 Western Gull (left) & Herring Gull, both basic adults |
 Glaucous-winged Gulls: 2nd cycle (left), 1st cycle (right) |