Shifting Baselines and Sneaky Jays
10,000 Birds
DECEMBER 14, 2018
A 1978 paper in SORA indicates that Blue Jays had gone from “few extralimital records” prior to 1972 to rare but regular across the mountain West and into California, Washington and Oregon, with 220 extralimital records in the wither of 76-77 alone. 1978, for reference, was the year of my birth.
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