A favorite falcon

I guess maybe I’m not supposed to have favorites, but one of the most spectacular of our local birds to me is the American kestrel — a small, colorful falcon found here in northwest Connecticut.  

The male is extremely handsome, having slate-blue wings with black spots and a rusty red tail with a broad black band and a white or reddish tip. Its back is also rusty red with black bars, and the underparts of the kestrel are a dull orange with black spotting, especially along the sides.

The top of the head is blue-gray with some orange and on the back of the head are tan spots with dark centers forming “eyespots†that are visible from behind. These types of misleading “eyes†can also be found on butterflies and other critters and are commonly thought to confuse predators.

Northwest Connecticut is an important place for American kestrels. They can be found throughout the United States but their population seems to be declining across its range.  The reasons for this are uncertain: Habitat loss in its breeding and/or wintering grounds?  Pesticides? West Nile virus? A combination of these and other factors?  

Kestrels can be seen hovering over fields in search of prey that includes insects, rodents, small reptiles, amphibians and birds.  They nest in cavities in trees near their foraging areas.

The combination of loss of farmland and diminishing suitable cavities may be the limiting factor for kestrels statewide. They are listed as a threatened species in Connecticut, but here, in our part of the state, we still have fairly large farm fields and other open areas — and indeed we do have breeding kestrels.

We think the limiting factor in our area may be the availability of suitable cavities in these high-quality habitats.

This past Sunday I spent several hours checking some of the 26 kestrel nest boxes installed by Audubon in the Northwest Corner and had the privilege of banding nine young: five females and four males.  

These boxes were built and installed by Art Gingert of Cornwall and Mike Dudek, who is the land manager with Audubon Sharon. They used materials donated by Ed Herrington.

The boxes enable kestrels to find sturdy and dry nest sites in excellent habitats with an ample food supply that will enable them to raise young.

In a couple of weeks, many of the kestrel young will leave the nest. This is a good time to see my “favorite falcon†as the adults teach the young how to fly and hunt. It is not unusual to see the whole family unit perched on a utility line acting as a launching pad as the young take their first flights over the field where they were born.

 

Scott Heth is the director of Audubon Sharon and can be reached at sheth@audubon.org, (subject line: Nature Notes).

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