Just speculating myself, but some two-year old Black-bellied Plovers making their first trip back to the arctic might fail to breed through inexperience rather than lack of energy.

-Geo

On Jun 28, 2011, at 8:42 AM, david nicosia wrote:

It is very interesting that shorebirds are already showing up again and it is late June. Failed breeders? or did they just halt their northward migration for some reason (lack of fat reserves?) and will stage before continuing south again? Could they be very late "spring" migrants (younger birds that won't breed)? It seems hard to believe these birds would have made it to the arctic, failed at breeding and had enough energy to make it all the way back down here by the end of June. Since I am not an ornithologist these are mere speculations on my part. Anyone have a more definitive idea on this? or know of research studies on this? just really
curious.  thanks.
Dave Nicosia


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