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 Forum Index > Raptors Other than Eagles > Other Raptors -- Questions, Information and General Discussion
 Coopers Hawk (accipiter cooperri)
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By: ostrich (offline) on Sunday, February 25 2018 @ 11:30 PM EST  
ostrich

Feb 23 - I went out before sunrise in the park to check on any activity, and I did get some repeated kik calls from the male for several minutes right on cue, in the trees right along the N edge. Then suddenly I thought I heard some distant kek calls from across the park in the S end, and there was a Coopers in flight overhead making very loud kek calls, but with an unusual cadence. After a few seconds I realized why the Coopers was agitated - there was a RT visitor in one of the nearby trees. It ended up flushing and getting chased by the Coopers all the way back to the trees along the S edge. By the time I walked back over there the RT was still there with the Coopers perched a few trees away and above it watching it. Shortly thereafter the RT flushed again and the Coopers was right on its tail again until it got chased all the way out of the park. I'm pretty sure it was the female harassing the RT, although I'm not 100% sure. But I'm assuming that both are now back on territory.

Feb 24- I went down before sunrise to check on the High Park territory, I did spot the male flying around to a few different spots, and periodically breaking off sticks, along with quite a bit of vocalizing among the trees. I wasn't sure if the female was there or not as I didn't spot her among the trees, but she may have been. The male flew one stick up into a small nest structure in a deciduous tree right across from the old bird feeder area. The other times though he was back in the set of conifers where the nest tree was two years ago. I didn't see any activity this time near last year's nest tree.



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By: ostrich (offline) on Tuesday, February 27 2018 @ 10:15 PM EST  
ostrich

This is some interesting research on urban sparrowhawks - similar findings have been made with urban Coopers hawks.

http://www.bbc.com/news/uk-scotland-41470917

Banding Reveals Potential Northward Migration of Cooper's Hawks from Southern California

http://www.bioone.org/doi/abs/10.3356/JRR-16-97.1


https://www.smithsonianmag.com/science- ... -60843309/



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