juvenile; barring on underparts (California, USA; 2006-09-29)
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Parasitic Jaeger
Stercorarius parasiticus
Native Range:
North America and Eurasia
Notes:
a kleptoparasite, meaning that it feeds by stealing food from other birds (terns in this case); it does so by harrassing a tern until the latter disgorges food from its crop, which the jaeger then snatches and swallows; nests on the tundra and migrates mostly at sea.
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juvenile; light bill with dark tip (California, USA; 2011-10-02)
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juvenile sitting on water (California, USA; 2011-10-02)
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juvenile; white patches near wing-tip (California, USA; 2011-10-02)
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juvenile; central projection from tail (California, USA; 2011-10-02)
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chasing a Forster's Tern (California, USA; 2011-10-02)
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still acrobatically chasing a Forster's Tern (California, USA; 2011-10-02)
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migrating at sea (California, USA; 2011-10-02) |
at sea (California, USA; 2011-12-09) |