Return of the Green-Wood Merlin

Falco columbariusI said recently that Merlins (Falco columbarius) were comparable in size to Blue Jays (Cyanocitta cristata). Ummmm, well…. That’s a Merlin on the upper left. The other birds are Jays. Up to seven were in the tree recently on a very gray day, harrying the falcon until it flew off. Falco columbariusWheeler’s Raptors of Eastern North America has these figures for Merlin dimensions: male length head-to-tail 9″-11″, wingspan 21″-23″; female length 11″-12″, wingspan 24″-27″. (Female raptors are always larger than the males.)Cyanocitta cristataSide by side comparison. Actually, the Jay is closer to the camera by maybe two feet. The Jays were making some cat-like sounds in the tree as they maneuvered around the falcon, mostly underneath it, and flew in and out of the tree. There were a few strafing passes launched at the falcon, the Jays doing so making a very unusual buzzing sound. Interestingly, the Jays even chased each other a few times here while they were working cooperatively to chase off the raptor.

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