Punctuality Worth Celebrating–First Arrivals 1996-2015

Thanks to Kerry for sharing this chart of his diligent recording!
ABD Chart du Annee 2015
Another Bufflehead, Kahooteenik, bang on the mark. The average is now 298.06   +/_ standard deviation of 2.82, sample size 18.
Mind the gap at Day 297.
first arrivals

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