Nature Note:Catbird Song

A gray catbird has been singing all morning.He hasn't let me see him,but his song is unmistakable.It's a series of squeaks that has a cheerful effect.The northern mockingbird is his cousin,but the catbird's song doesn't sound like the mockingbird's.It isn't a series of imitations of other birds or even inanimate objects.The catbird just inspires himself and everyone else who is listening.They can get through the summer heat with his help.