Today — synthesis for Whiskey Island birding

Why this morning

Strong S tailwind + heavy BirdCast traffic last night suggests birds bypassed for Canada — photo yield may lag list diversity. WSW aloft (253°/17mph) wind carried migrants north overnight; 3.67M birds crossed Cuyahoga — huge (100th percentile this spring). Dry-ish dawn (7-16% PoP); no fallout-trigger precip, so birds settle into cover by their own clock. Phenology is dead-center for Blackpoll, Northern Waterthrush, Wilson's, Magnolia warblers (peak-week composition). Expect 50-70 species; comparable to Thu 5/7 (7.63). Expected high migration tonight — 621k birds forecast (97th percentile, top-4 night of season); tomorrow's score may rise.

• Pass-through penalty (-0.8, list): birds bypass Wendy on tailwind+dry+high-traffic — birds high in canopy or audible-only — list diversity drops