Purple martins have begun roosting nightly at the Nebraska Medical Center in Omaha.
Jim Ducey, an Omaha birder who tracks the martins comings and goings, said about 125 are roosting there. And this is just the start.
Martins gather nightly in large roosts after they no longer need to tend to their young at their individual nesting sites.
Eventually, the roost will include a number of purple martins that have reared their families in metro area yards and beyond. In summers past, the roost has grown to as many as 65,000.
The birds take shelter in the small group of trees along 44th Street, immediately south of Farnam Street, near the medical center. Parking is available in nearby lots. The Nebraska Medical Center asks that people not block the road, because it is the emergency entrance used by ambulances.
Ducey said the numbers will gradually grow and likely peak sometime in August, then diminish in September.
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