INDIANAPOLIS, IN — More than 550 million birds are expected to be migrating across the United States on the night of October 4, prompting a lights out alert. The heaviest migration is focused through the central part of the country, from the Great Lakes south to the Gulf Coast. Indiana sits in the path of this massive movement, with about 19.5 million birds forecast to fly over the state. Residents and businesses are being urged to turn off unnecessary outdoor lights to help birds pass safely.
Highest Migration Intensity Runs Through the Central United States
The migration forecast shows the highest intensity in a broad corridor stretching from Minnesota and Wisconsin through Iowa, Illinois, Missouri, and Arkansas. That corridor continues south through eastern Kansas, Oklahoma, Texas, and Louisiana toward the Gulf Coast.
Birds are moving south from the Great Lakes region along this central path. The heaviest flight activity is expected over the Mississippi Valley and southern Plains through the night.
Medium Activity Covers the Ohio Valley and Southeast
Medium migration intensity spreads east across Indiana, Ohio, Kentucky, Tennessee, and much of the Southeast. Parts of Georgia, Alabama, the Carolinas, and Florida also show moderate bird movement tonight.
Lower migration activity is expected across the western United States and much of the Northeast. The Rocky Mountains, Great Basin, and West Coast show the lightest movement on the forecast map.
Indianapolis Leads Indiana Cities With 208,700 Birds
Among Indiana cities, Indianapolis is forecast to see the most birds overhead, with about 208,700 passing over the city area. Fort Wayne is expected to see around 58,100 birds, while Evansville is forecast at about 22,400.
Across the entire state, roughly 19.5 million birds are expected to fly over Indiana during the night. The state is highlighted under the lights out alert as heavy migration continues.
Bright City Lights Pose a Risk to Migrating Birds
Most migrating birds travel at night, using natural cues to navigate during their long journeys. Bright artificial lights from buildings and cities can confuse birds and draw them off course.
When birds become disoriented by lights, they face a higher risk of collisions with windows and buildings. Reducing outdoor lighting on heavy migration nights can significantly lower that risk.
Residents Urged to Turn Off Unnecessary Lights Tonight
Homeowners and businesses across Indiana and the central United States are encouraged to turn off nonessential outdoor lights tonight. Closing blinds and dimming interior lights in tall buildings can also help.
Simple steps like these can make a meaningful difference during peak fall migration. With hundreds of millions of birds on the move, tonight is one of the most important nights of the season to keep lights low.
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