Interesting. About 20 years ago I discovered a wintering Northern Shrike at Beltzville State Park in eastern Pennsylvania. It was sitting in the only very large tree at the edge of the lake in exactly the same spot where I had seen Northern Mockingbird on numerous prior occasions. In fact, from a distance I thought it was a Mockingbird. However, the rather cheerful warbling of the Shrike drew my attention as it was unlike any Mockingbird imitation I had ever heard, and was also persistently the same song. I never observed the behavior of chasing after sparrows and other passerines in the area, but it certainly was not hiding from any prospective prey as Shrikes, I think, tend to be. Richard ZainEldeen Brooklyn, NY
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