Last night (Friday) the Ankeny Motus tower picked up signals from its seventh Swainson's Thrush this month. This bird, as the others, was tagged to the north. This one near Vancouver, BC, in late August so it may have already been on the move from even further north. Twenty days ago this bird was last noted at Samish Island, Washington. That's along the coast between Burlington and Bellingham. Then island is roughly 70 miles north of Seattle. At Samish the signals csame in overnight so the thrush was flying past--most songbirds migrate at night to avoid day-time predators. The sensoir data at Ankeny was also brief, during an overnight passage...likely a flock heading for their winter vacationland.
Click here for the Ankeny Motus website.
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