Weighing less than a third of an ounce, the Blue-gray Gnatcatcher is smaller than almost all other Pennsylvania birds.

This week I came across a different kind of "tail-pumper" with a flock of Palm Warblers passing through on migration.

A fun sign of spring is the persistent song of the Eastern Phoebe, which returns to the Susquehanna Valley each year during the month of March.

I saw my first Great Egret of the year this week. Egrets leave our area during the winter, flying closer to the coast where unfrozen water is easier to find.

Spring is one of the best times to hear the song of the Northern Mockingbird. They sing during all seasons, but their songs are more complicated in spring.

One of my favorite signs of spring starting each year is the soft, faintly musical, trilling song of the Dark-eyed Junco.

Look closely at a flock of Mallards this time of year, and you might find a similar species, the American Black Duck.

Few predators are more dangerous to your backyard birds than the Cooper's Hawk. Their short wings and long tail give them agility to chase down other birds.

The Yellow-bellied Sapsucker is a migratory species of woodpecker that nests across the northernmost third of Pennsylvania.

I came across one of my favorite birds while driving west on a Pennsylvania highway this week: the beautiful Rough-legged Hawk.