The baby cowbird will grow faster than the bluebird babies, and demand more of the food the parents bring, thereby putting the bluebird babies’ lives at risk. It may be technically illegal in your state to remove a cowbird egg from a nest, since the cowbird is a native species. That being said, I’ve heard of some people taking the egg out to examine it, and having it be so slippery it just falls out of their hands.
Central NY
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