[Tweeters] Cowbird Flock just passing through?

[Sego Jackson]

Last evening on our tray feeder and below it, on Whidbey Island, we had a minimum of 30 cowbirds show up to feed. Previously had only seen a couple at a time. Mixed male and females but probably 75% males.  My first thought was “none of our songbirds have a chance for just their own eggs.”  Do any of you have thoughts on if a flock like this is just passing through, or if it disperses locally, or do they stay in a flock like this locally? Thanks.

Sego Jackson

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