April 21, 2025

Spring Bird Migration

Guess who’s back? The birds!  Running from March - June, the annual spring bird migration is massive, sometimes sees 450 - 500 million birds flying at once under the cover of night. The peak of the migration will reach Maine in early - mid May. Learn about this amazing migration with the resources below.

Live bird migration maps

Keep track of the spring migration with live bird migration maps that show how much, where, and when migration is occurring in real-time. You can also set migration alerts to learn when intense bird migration will occur. Check out BirdCast’s live migration tools here.

Download the Merlin App to help you ID birds

The Merlin Bird ID app, developed by the Cornell Lab of Ornithology, is a free, user-friendly tool that helps identify birds by sight, sound, or through a quick identification wizard, offering photos, sounds, range maps, and customized lists of birds for specific regions. Learn more and download the app here.

Attend a bird walk with LEA

What: Spring Bird Walks

Where: Bob Dunning Memorial Bridge, Pondicherry Park, Bridgton

When: 7:00 AM on Monday 4/28, 5/5, 5/12, 5/19.

Sign up here.

Turn off your lights
Peak migration is a dangerous time for birds that can become disoriented by lights and collide with windows. All types of buildings, from skyscrapers to low-rises to residences, can cause collisions. To help keep birds safe, BirdCast recommends turning out nonessential lighting from 11:00 pm to 6:00 am, or drawing curtains to keep light inside.

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