Bob Rosenfield holds a pair of Cooper’s hawks in a city park in Victoria, Canada. The female, in the foreground, is a third again as large as her mate. Eric Wagner Bob Rosenfield stares up into the ...

Q: I’d like to have more hummingbird action at my feeders this summer. Do you have any tips for attracting more of them? A: Hummingbirds are ferocious about maintaining a territory, so the challenge ...