Discover Bird Migration

… with Weather Surveillance Radar

Weather surveillance radar (WSR) is an excellent tool for determining where birds are flying, how many birds are aloft, and in what direction, speed, and altitudinal strata they are moving.

Radar technology is generally not effective for identifying species (especially WSR), but in conjunction with others sources of data (e.g. observational and acoustic information), it can provide a unique insight on movements of birds at scales as diverse as local to continental.

The four BirdCast products linked in the boxes that follow are excellent means to discover and to explore patterns of nocturnal bird migration in the contiguous U.S.

Disclaimer: Many radars in mountainous areas (e.g. the Rockies) have obstructions that restrict radar coverage, providing the appearance of no migration where migration may be occurring. Radars may occasionally shut down for maintenance, and in these periods no data are available.

Live Maps

Discover how much, where and when, and in what direction nocturnal bird migration is occurring in near real-time*.

Watch Live

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Forecast Maps

Learn how much, where and when nocturnal bird migration will occur.

Be Prepared

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Migration Alerts

Know when intense periods of nocturnal bird migration will be occurring near you**.

Sign Up Here

_{**(Currently only available for limited cities.)}

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Your Local Dashboard

Explore details of nocturnal bird migration in your county and state*.

Discover Yours

_{*(Currently only available in the contiguous U.S.)}