I live in central Florida and provide some seed and suet and nectar for the true "snowbirds" in the winter. There are several yellow rump warblers (and other types) coming by frequently through the day. One little guy has my curiosity, he stays here in my yard and most particularly a single small (4ish feet) bare tree for hours each day. No sign of distress (though I know birds are masterful at hiding illness) he seems quite content to sit on the same low branch looking about. He eats, drinks and is showing no signs of building a nest, which I doubt he would do here anyway. And he is quite unwilling to share this space with other warblers, sets off after them if they come near "his tree". Anyone know if this is normal? Should I be trying to find him some help?