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報告

投稿者

日付

場所

Nashville -- Downtown Purple Martin Roosts (please include precise location in checklist notes)
Davidson, Tennessee, United States
この場所の視聴覚メディア 図解チェックリスト
地図
地図 座標: 36.1599484, -86.7760841
年齢
指定なし
性別
指定なし

観察結果の詳細

The Nashville roost is back! My general sense was of fewer overall numbers than at the height of the roosting in August 2020 - numbers may still be growing. I took photos of roughly 20% of the sky while it was still light enough to capture very high birds as points, and I ran those images through JImage counting software and multiplied the sum results by 5 to get as close a count as I could. Results were rounded up to the nearest 5000.

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146.99 MB