On the Russian tundra, critically endangered Spoon-billed Sandpipers gather to nest and raise their young in numbers so vulnerably low, each new breeding season could be the species' last.
Falcons and starlings engage in an age-old aerial ballet, rising and diving in spectacular synchrony across the open sky.
The vast grassy puszta holds some of Europe's best bird habitat, unspoiled by communism but now threatened by economic crisis.
A pale pink redpoll highlights a wintry alder branch.
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