It’s an early start to the warbler season for me.

I was walking at my usual patch on March 31 when I heard a familiar trill-like song from the top of a tall white pine. A fast-paced trilling usually means it is a junco, chipping sparrow, or pine warbler. All three of these birds are in New England now, so unless you are an expert at identifying birds by song, it is best to find the bird and get visual confirmation.

Like most warblers, pine warblers do not sit still for very long, so it took only a few seconds of searching to find the tiny bird moving among the branches. It was indeed a pine warbler, a mostly yellow bird with white wing bars on gray wings.

Pine warblers are always the first, or at least one of the first, warblers to show up in New England each spring. I usually do not find them until a few days into April, but this year, my first warbler sighting came on the last day of March.

Coincidentally, I saw my first chipping sparrow of the spring last week as well. Yes, spring migration is underway.