1st Week of May – Beaver River, Yarmouth County, Nova Scotia

Spectrogram of night flight call of Black-and-white Warbler

There was nocturnal migration recorded during six out of seven nights this week, the most consistent pattern of movement for this spring to date. The largest movement occurred on the night of 7-8 May when veering winds from southwest to northwest over the Gulf of Maine and Bay of Fundy brought a small flight of sparrows and warblers to the Beaver River shore between 0200 and 0430 hours.

The most common bird of the week was White-throated Sparrow with 25 estimated birds. There were also an estimated 14 Savannah Sparrows and 3 Chipping Sparrows. The most common warbler was Black-and-white Warbler with an estimated 7 birds, followed by 4 Yellow-rumped Warblers, 4 Palm Warblers, and 1 Common Yellowthroat.

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