... are notorious for their high consumption of flying insects, including mosquitoes, but they are also beautiful birds. Males are dark, iridescent, metallic blue while females and first-year males are blue-brown above and white below. Their song is a delightful liquid rolling twitter. Males arrive at the nest site before females in order to establish territory. Female birds select male-nestbox combination, not one or the other, and both sexes begin building a stick nest inside the compartment. Pure white eggs averaging four or five per nest are incubated solely by the female. Incubation usually takes 15 to 16 days. Both sexes then spend every daylight hour hunting for flying insects to feed the young. They are especially fond of dragonflies. Once a colony is established in your yard, it will continue to grow year after year, and likely so will your enthusiasm. Perhaps you can even encourage others in your neighborhood to ...

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