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Winter adult (January), California. The darker mantle on this bird suggests that it is of the southern subspecies "wymani."
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Late fall adult (November), California. The mantle color of this bird is dark enough to suggest that it is of the the southern subspecies "wymani."
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Late fall adult (November), California.
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Summer adult
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adult, fourth-cycle plus, sitting on water, taken 7 May 2009
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Winter adult (December), Oregon. Mantle color of this bird is typical of the northern subspecies "occidentalis."
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Late fall 1st cycle (November), California.
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Late fall 1st cycle (November), California.
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First winter (November), California.
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Late fall adult (November), California. Darkness of upper wing suggestive of southern subspecies "wymani."
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Sub-adult. Most of the plumage, the clean white head and tail, and the brigh orange-yellow bill are typical of the adult aspect, but the flight feathers (primaries and secondaries) indicate that this is not a full adult (4th cycle+).
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Late summer adult (August). Molting primaries.
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Fall age uncertain (October). This bird shows a bit of mottling on the head and some dark on the coverts, which indicates that it is earlly in its 4th plumage cycle.
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Early fall 2nd cycle (September), California. Extensive white on rump and mostly gray mantle, combined with the mostly dark wings age this bird.
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Early fall 2nd cycle (September), California. Extensive white on rump and mostly gray mantle, combined with the mostly dark wings age this bird.
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Early fall 1st cycle (September), California. No evidence of wing molt.
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Age uncertain (November), California. White rump suggests 2nd cycle, but lack of gray on the mantle more suggestive of 1st cycle.
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Early fall juvenile (September), California.
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Early fall juvenile (September), California.
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Winter adult (December), Oregon. Note clean white head and orange-yellow bill.
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Winter adult (December), Oregon. Note clean white head, which suggests that this is a "pure" Western Gull.
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Eggs collected by Manassa Schrock at Newport, Lincoln County, Oregon on 15 June 1957.
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Winter adult "Olympic Gull" (December). In 4th-cycle+ adult Westerns the head is clean white in winter. This bird shows some darker feathering on the head, suggesting that it is a Western Gull X Glaucous-winged Gull intergrade.
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