Thursday, March 19, 2009

Nesting Boxes


Those who love the bluebird have begun a massive effort to save it through the erection of thousands of nesting boxes appropriate for this species and predator- and competitor-proof. And the bluebird is beginning to reappear in areas where these bluebird houses are established.
There are three species of bluebird: Eastern, Western, and Mountain, and they belong to the thrush family. The Eastern Bluebird or Sialia sialis breeds in every state east of the Rocky Mountains. It is bright blue with a rusty red breast similar to the robin's. The Western Bluebird or Sialia currucoides breeds in the western states from Canada to Mexico and east to Colorado. It has a blue throat, and the red color extends to its upper back. The Mountain Bluebird or Sialia mexicana breeds in the Northwest, east to the Dakotas, and north into Alaska. It is entirely blue, with a white underbelly.
Bluebirds are primarily insectivores, eating many insects considered pests by man: cutworms, grasshoppers, and flying insects. They supplement this diet in fall and winter with wild berries and may starve if snow covers the ground and berries are unavailable.

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