Home: More Nesting Boxes than Human Houses

Female Violet-green Swallow
Chignik Lake, Alaska Peninsula, May 15, 2019

One of the most charming aspects of life at Chignik Lake is that scattered throughout the village there are more homes for swallows than for humans. Each spring the arrival of the first swallows is anticipated with almost as much enthusiasm as the arrival of the year’s first salmon.

The relationship between Native Americans and insect-eating birds such as Purple Martins and swallows precedes the arrival of Europeans on the North American continent. Audubon as well as observers who preceded him reported hollow gourds appointed with an opening hole and hung around camps and villages as nesting boxes for these birds. A single swallow or martin consumes about 2,000 small insects a day. That’s enough to make a real dent in populations of mosquitoes and biting midges. So, one could purchase a powered mosquito trap for several hundred dollars – thus emptying the air of the bugs nesting birds need to feed themselves and their offspring – or one could install nesting boxes, achieve the same bug-limiting effect, and create a sustainable cycle wherein swallows and martins return each year to mate, fill the air with their happy chirps, and clean out the bug population while raising a brood. The wooden boxes will long outlive the mechanical trap, and when the box does finally expire it won’t leave behind yet another plastic contraption to add to the local dump or landfill.

Three species of swallows inhabit the Chignik River drainage. The smallest are the little brown Bank Swallows. They make their nesting tunnels in sandy banks along or near the river and are fairly abundant. With the help of humans and nesting boxes, Tree Swallows, the largest of the three species, also thrive. Violet-greens are less common, perhaps outcompeted for boxes by the larger Tree Swallows. Barn Swallows, which can be found in villages further up the peninsula, haven’t yet made their way to The Lake.

There are good DIY nesting box designs available online and in books, and they can also be purchased ready-made. There is also good information available regarding controlling European Starlings and House Sparrows which can be a problem in some areas; these invasive species are infamous for taking over nesting boxes and even killing the desired swallows.

So… what are you waiting for? It’s probably too late in the season to attract new nesters this year, but if you hang a box or three now, a year from now they’ll be appropriately weathered and attractive to newly arriving migrants. A mated pair of birds happily rearing their chicks brings cheer to any property.

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