One of the many kinds of birds seen at Tandy Hills, the Northern Mockingbird is the state bird of Texas. It's known as a mimic of other bird's songs, but can sound like squeaky gates, pianos & barking dogs! A loud and aggresive-territoral bird, the males croon day and night for hours-n-hours in the spring. In the fall both sexes sing to inform and defind their feeding areas. Their range is mostly southern United States and nothern Mexico but is moving northward.