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Owls3.0

4371 Mayfield Road, West Bend, WI, USA

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I saw the female cowbird exploring around the bush where the nest was, but the nest didn’t have any eggs in it at the time. I suppose she waited until the sparrow laid her eggs. This is my first nest with a nest parasite this year.

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Song Sparrow Nest With A Cowbird Egg!

The cowbird egg is the larger one. They all look pretty similar.

One response to “Song Sparrow nest with a cowbird egg!”

  1. Micah Grove says:

    Oh no! I’v had 3 Song Sparrow nests in one year and all of them had one Cowbird egg.

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