I have had Gray Catbirds visit my yard for past 8 or so years since a pair nested in an overgrown shrub (laced with invading vine) right under my dining room window. I like to think it is either the same pair of birds or their offspring who visit and often engage in counter-singing with me (yes, the catbird would sing, pause and I would whistle their song, the catbird would sing again, alternating sometimes for several minutes). I cleaned up that shrub so they don't nest in my yard anymore but appear to nest somewhere close in my neighborhood as one and sometimes two adult catbirds pay frequent visits in the spring. They also usually bring their offspring to meet me--well, that's what I would like to think but I realize they like all the fruit bearing plants and trees plus nice thick vegetation to hide them in. Several days ago I heard what sounded like fledgling calls coming from a shrub in my next door neighbors front yard. After carefully approaching I spotted an adul...