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This work by Matthew Wills is licensed under a Creative Commons Attribution-Noncommercial-No Derivative Works 3.0 United States License.
Backyard and Beyond
Starting out from Brooklyn, an amateur naturalist explores our world. "The place to observe nature is where you are."—John Burroughs
This work by Matthew Wills is licensed under a Creative Commons Attribution-Noncommercial-No Derivative Works 3.0 United States License.
Backyard and Beyond 
House Sparrow is a major part of the kestrel diet from early spring to late summer when big bugs, like dragonflies, offer a bit of variety. There seems to be a coincidence betwween fledging of the sparrows and hathing of nthe kestrel eggs. Then, when lots of food for the young is needed, there is an abundant crop of young, stupid and available meat for the parents to deliver.