Reminders and Perils of Fall Migration in Costa Rica
10,000 Birds
SEPTEMBER 14, 2019
High overhead, swallows are going over and in the fields, blackbirds move in undulating flocks. Where will those birds go when they come back looking for food and shelter? Look for that neighborhood oriole or grosbeak and instead, we find others of their beautiful kind that have flown in from the boreal north. It can and does work !
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