Tweet from The Kingsboider (@BBCKingsbirds)

The Kingsboider (@BBCKingsbirds) tweeted at 8:13 AM on Fri, Sep 01, 2017:
Per ryan Huge flocks at MD monument. Saw a Mourning warbler
(https://twitter.com/BBCKingsbirds/status/903591561094725633?s=03)

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