Reminders and Perils of Fall Migration in Costa Rica
10,000 Birds
SEPTEMBER 14, 2019
Even if we couldn’t find time to raise the bins at a favorite patch, it only takes momentary glances into the sky and hearing chip notes from the trees to remind us that birds are on the move. High overhead, swallows are going over and in the fields, blackbirds move in undulating flocks. Migration is happening. and sprayed.
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