Just FYI, the gold standard here is eBird[0], by Cornell University's Orinthology Lab.<p>[0] <a href="https://ebird.org" rel="nofollow">https://ebird.org</a><p>Brief into video: <a href="https://youtube.com/watch?v=-t-0xAjxakw" rel="nofollow">https://youtube.com/watch?v=-t-0xAjxakw</a>