From late fall to early spring, I have beautiful regular guests for my bird feeders. They are Pine Warblers. (I know they are around here all the seasons of years because I can fear their singing voice all seasons. But they visit my feeders only on winter season.) As you can see on these pictures their appearance is pretty beautiful. These photos are male Pine Warbler ones and females are not so bright and covered with gray-brown feathers. The song voice of male pine warbler is typical and easy to remember so you can easily recognize them when you hear their voice.