DEAR JOAN: The last week or so, a hawk has been hunting the squirrels in our backyard in Walnut Creek. The hawk stalks them, flushes them out of the bushes and attacks from low altitude, so far with ...

Considered a deft flier and known for chasing prey on the wing, a Cooper’s hawk on the hunt can dart through dense tree cover at speeds of up to 50 mph. This agile, crow-sized raptor can even flip ...