Watching the Neighbors, Round 2: Coming to Terms

Once again I fell into the trap of thinking I, homo sapiens, knew more than a wild bird that evolved long before I did, in this case accipiter cooperii.

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

Not three days after I wrote my last post thinking I had intimidated the Cooper's hawk pair because I was taking their picture, they were back. For all I know they came back earlier but I was not outside to see it. This is why I should never presume. 

I don't know, I can only observe. 

Man may think he/she is at the top of the food chain but the reality is, all creatures must adapt to their circumstances. People used to shoot at Cooper's and other hawks. Now that is illegal. That has brought back the hawk populations, and with them the need for a good place to nest and rear young. 

That, for the Cooper's, increasingly means nesting in towns and suburbs rather than the forests, which are being ripped down for so-called development.

Here is how I described the return of my new neighbors in my bird log of March 31: "I don't know why I thought I could intimidate a hawk. Yesterday [March 30] circa 7 am, I was outside and heard a "kek." I looked up [and] there they were, working on twigs for the nest. I put out one feeder and stood by as the male cardinal, perhaps sensing why I was there, came to feed as usual, jumping to the top of the pole. His mate called to him from the dogwood. When he flew off I moved so she would not see me but I could be seen by the hawks. They weren't interested, and the female cardinal stayed put. Only after I went back on the porch did [the female and then the male again] both come to eat. After they left I got the feeder."

Since then any hope of "normal" has disappeared. As with the coronavirus, there is a "new normal" in my yard. The nest, like the virus, like the clouds that have rarely departed over the past week, hangs over my thoughts and has changed the feeder birds' behavior - and mine. After several days of no activity at the caged seed feeder or the suet feeder I emptied them until winter. Now, I only put out water and the house feeder, which can accommodate all the birds large and small. The cardinals have not deserted me, not just because I am feeding them (I would like to think) but because I think the pair has its own nest nearby.

Now, at dawn, I go outside and hear the usual birds - song sparrows, Carolina wren, more robins, the cardinals. I hang the one feeder and usually the male flies from his hiding place to a nearby shrub, waiting for me to move away. He eats, then jumps to a high perch to sing his territorial song. His song used to cheer me, now it fills me with dread because I am watching that damned stick nest. Other birds might come by but as soon as we hear that "kekkekkek" I know one or both predators are back and so do the birds and squirrels.

Another year, another juvenile Cooper's hawk in flight (RE Berg-Andersson)

Still, I leave the house feeder out all day because the hawks don't seem to be hanging around the nest all day - yet. I have watched them long enough by now to think - not know - they are most active at dawn and at dusk. Yesterday I sat on the porch and watched the hawks on a stout branch of the next tree over from the nest tree. The male worked on the nest, flying up every so often with twigs. 

But he did something else, too - he mounted the female. Ten seconds of noisy avian sex. He worked on the nest and than mounted her a second time. As far as I know I am the only person who witnessed it, but the male cardinal was smart enough to grab some food while the hawks were otherwise engaged. Eventually, the male Cooper's flew south and, a few minutes later, so did the female. Then the birds and squirrels started returning, tentatively.

On the one sunny day we had this week, I had my office shades open. I am frequently distracted by noise and movement on my street, which is greater than usual at this time of year because of New Jersey's stay-at-home order. But I wanted the shades open to let in the sun, and that is how I saw one of the hawks flying around the front yard. Finally, I raised my shade and saw the male sitting on a branch on the tree in front of me, working to break off a twig! I took his picture. Eventually he left.

So, as with the virus and being forced to wear a bandana over my nose and mouth, I have had to make an accommodation. The hawks are not going to give up the nest and I am not going to give up feeding at least some of the birds.

I look on the bright side. Since the hawks arrived I have seen only one blue jay at the feeder. I have seen only one house finch. The jays bombard the house feeder, making it swing so wildly I fear it will fall to the ground. The house finches arrive en masse and make a mess while blocking other birds from eating - unless it is a bigger bird like the cardinal. There are fewer squirrels running around the lawn. I have seen no chipmunks, at least in the backyard. 

I am allowing myself to look at these visitors with wonder. Last year I enjoyed watching the robins at their nest. This year it will be Cooper's hawks. 

The day I photographed the male was windy, and I was amazed how aerodynamic the birds are. They seem top-heavy with their squared-off heads and wings compared with their relatively slender, rounded tail. The pair are juveniles - both brown-backed and streaked on the breast rather than the mature hawk's gray back and dense red streaking on the breast. But these juveniles know what they are doing. From the branch, the hawk jumps off and spreads its wings, allowing the updraft to carry it higher. Unlike the smaller sharp-shinned hawk, with its flap-flap-soar wing motion, the Cooper's seems to glide.

The male cardinal continues to sing from a high perch whether a hawk
is around or not. (Margo D. Beller)

I've learned where it got its name: It was, says Wikipedia, "first described by French naturalist Charles Lucien Bonaparte in 1828. This bird was named after the naturalist William Cooper, one of the founders of the New York Lyceum of Natural History (later the New York Academy of Sciences) in New York."

Here is how John James Audubon describes the Cooper's in his Birds of America: "The flight of the Cooper's Hawk is rapid, protracted, and even. It is performed at a short height above the ground or through the forest. It passes along in a silent gliding manner, with a swiftness even superior to that of the Wild Pigeon...seldom deviating from a straight-forward course, unless to seize and secure its prey."

It is that flying "a short height above the ground" that keeps the squirrels high in the trees when the hawks are around and the mourning dove - a favorite snack - away from the area under the feeder where the seeds are dropped.

Audubon says the male is 20 inches long with a 36-inch wingspan while the female is 22 inches long with a 38-inch span. This is much bigger than what David Allen Sibley says in his guide, although he gives only one measurement despite knowing the female is bigger than the male: 16.5 inches long with a 31-inch wingspan. 

Cooper's passing through another year
(Margo D. Beler)

While the Cornell Ornithology Lab does not give the hawk's dimensions, it does provide this handy tip:

"While catching smaller birds is just doing what comes naturally for a Cooper’s Hawk, many of us would prefer not to share the responsibility for the deaths. If a Cooper’s Hawk takes up residence in your yard, you can take your feeders down for a few days and the hawk will move on."

But what if that residency involves an honest-to-Audubon nest? In that case, here is what I can look forward to: one brood a year, two to six eggs, 30-36 days of sitting on the eggs and then 27 to 34 days of young in the nest. The Audubon field guide says the young "may climb about in nest tree after about 4 weeks, can fly at about 4-5 weeks."

That puts the time when both parent hawks will be feverishly seeking food for the young at around mid-May, peak songbird migration time. If the young hawks successfully fledge, they should all be gone by mid-summer, which is when the hummingbird feeder I still plan to hang and the house wren box I still plan to hang should be pretty busy.

And maybe this coronavirus plague will have passed by then.

It's going to be a long season.