The Ruby-crowned Kinglet is a small songbird that is found in North America. It is one of the smallest birds in North America, measuring only about 4 inches in length. The bird is named for the ruby-red crown patch on the head of the male, which is usually concealed. The female lacks the ruby crown and has a yellow patch on her head instead. Ruby-crowned Kinglets are known for their high-pitched, rapid songs and their active, restless behavior as they flit through trees and shrubs…