Watching the Neighbors: Look Who's Here

Watching the neighbors is a long-time suburban occupation that has become even more important, at least to me, as people stuck working indoors or with small kids at home take to the streets in greater numbers during this time of coronavirus to keep from going stir-crazy. 

Cooper's hawk nest, 2020 (Margo D. Beller)

I keep the shades open on sunny days and so I am frequently distracted at my work by all the passersby, wondering if they are neighbors and, if not, who they could be. There are also the service trucks pulling into neighbors' driveways, landscapers doing the annual "spring cleanup" lawn service and the occasional herd of deer I have to go outside and chase off.

It was because my office shades were open one day this week that I saw a large shape fly over the house and wondered what it could be. That evening, when I went outside to take in the bird feeders, I learned what that shape was and I was less than excited.

I've had bird nests in my yard, including a robin's nest for a good hunk of last summer. The house wren box is a nest I provide. I've even had hawks of different types in my yard, but they are usually passing through, hunting for a meal.

But to discover a Cooper's hawk, with mate, building a nest high in my next-door neighbor's maple tree with a birds-eye view of the feeders, I knew this was trouble.

Cooper's hawks are accipiters and, like their smaller relative the sharp-shinned hawk, are very nimble hunters in parks, woods and backyards. Unlike the bigger and bulkier buteos such as the redtail hawk, accipiters can maneuver through tree branches and bushes after their prey, especially after the hawks have matured to become better hunters. I have seen mature accipiters catch and kill birds and I've also seen immature accipiters miss and then sit on the lawn or atop the bird feeder looking, to me, puzzled.

Watched like a Cooper's hawk, the larger female on the right.
(Margo D. Beller)

About the only "good" thing about having Cooper's hawks rather than sharp-shinned hawks around is the former prefers medium-sized birds rather than, say, a titmouse or chickadee. Cooper's prefer mourning doves and one of my least favorite birds, the European starling. But they will also go after other medium-sized birds including common pigeons, robins, jays and flickers, according to Cornell's Ornithology Lab. Cooper's have been known to eat chipmunks, mice and squirrels. (I can do with fewer chipmunks.) 

But a cardinal would be just the size for a Cooper's and I have a pair that use my house-shaped feeder daily, the male prone to taking a seed and then jumping on top of the feeder pole to eat while showing others this feeder is his. When he did that the day after I discovered the nest I watched nervously until he left. After that I noticed no other birds came to the feeder and the squirrels high stayed in the trees.

The hawk pair seemed to be more concerned with building their nest of sticks the day I found them. They flew to a nearby oak and laboriously broke off smaller twigs to add to what had already been built up in the V formed by two branches high in the tree. Again according to Cornell, "Nests are piles of sticks roughly 27 inches in diameter and 6-17 inches high with a cup-shaped depression in the middle, 8 inches across and 4 inches deep. The cup is lined with bark flakes and, sometimes, green twigs."

Robin's nest, 2019 - I don't mind nests like this in my yard. (Margo D. Beller)

Typically it takes two weeks for a nest to be formed, so this one couldn't have been started that long before (bird traffic at the feeders had not appeared to be down, tho' since I was working I couldn't be completely sure).

Once I realized what was going on I grabbed my binoculars to confirm my guess as to what kind of hawk these were. One look at the prominent "eyebrow" confirmed they were Cooper's. Then I got my camera and used the telephoto lens in hopes of getting a decent picture of the nest. (My picture above was taken the next day.)

The next morning, around 7 a.m., both hawks were back to their nest building. I heard robins, cardinals and Carolina wrens calling as usual, except nowhere near my yard. When a Cooper's is in the area, birds like low. So do squirrels, which were not their usual boisterous selves chasing each other around the yard. I got my camera and started taking pictures again, especially when at one point in their twigmaking both hawks were on the same branch.

They looked at me intently. Then the male left and I heard it call "kekkekkek" from another tree. The female looked at me a little longer before leaving. I checked the nest throughout the day but they never returned.

Typical male cardinal behavior, photographed through
the backdoor screen. (Margo D. Beller)

That afternoon the squirrels were back looking for dropped seed under the feeders and the house finches, woodpeckers and cardinals were back eating. The danger was gone.

It was likely the hawks realized I had discovered the nest, or perhaps they didn't like me taking pictures. Unlike the redtails "Harold" and "Maud" whose nest I discovered many years ago in another town, this nest was in plain sight and close by. Seeing me taking pictures these hawks were likely as unhappy to have an intrusive neighbor as I was to have a bird-eating menace. It was easier for them, and safer for their prospective young, to abandon the nest and start over someplace else. Cooper's hawks are not an endangered species and I am confident that eventually the female will lay anywhere from two to six eggs in her one brood of the year.

Had these birds picked a tall Norway spruce or some other type of evergreen where the nest (and they) would be hidden, I'd never have seen them and perhaps not realize the danger to the feeder birds until too late. But they had picked a maple tree that had not leafed out yet, and even as I was taking pictures fish crows were cawing and circling the tree. Crows don't like having hawks in the vicinity either.

So the Cooper's hawks are gone and the danger is past for the cardinals and other feeder birds, at least from this source. My human neighbors, however, remain as noisy as ever.