Nesting Bluebirds

A pair of eastern bluebirds stakes their claim to the most hotly contested nest box in the vicinity. Some bluebirds spend the whole winter in Iowa. In February, they have already chosen mates and are already planning for the nesting season. Even though they won’t lay eggs for another month or two, this pair guards their holding and drives off any other bluebirds who seem to be interested in it. (© 2013 Diane Porter)

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