Long-tailed Jaeger (Stercorarius longicaudus) on its nest incubating eggs. Both sexes incubate and each sex has two brood patches. Incubating birds hold each egg between one foot and a corresponding brood patch. Yukon Delta National Wildlife Refuge, Alaska. May.
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Long-tailed Jaeger (Stercorarius longicaudus) on its nest incubating eggs. Both sexes incubate and each sex has two brood patches. Incubating birds hold each egg between one foot and a corresponding brood patch. Yukon Delta National Wildlife Refuge, Alaska. May.