The build up of the migrating flock of Wilson's Phalaropes at Presa Centenario is a real treat to behold. Yesterday, the surface of the lake was covered with dynamic specks of white and grey, as over 2000 of these birds actively fed to restore body fat before continuing their journey to their South American wintering range.
Most of the Phalaropes feed out on the lake, often by swimming round in tight circles to create a 'whirlpool' effect, which results in food rising from the bottom to the surface.
Many birds also feed in the shallows in the manner of other waders.
Although all of the Phalaropes have by now lost their breeding plumage and are in drabber non-breeding/first winter attire, they still make for a fine sight, particularly in the dying light of the day.
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