HomeScienceScientists track over 1.2 billion birds in single night migration

Scientists track over 1.2 billion birds in single night migration

Scientists tracked over 1.2 billion birds during a September migration surge, revealing species movement, risks from city lights and the urgent need for conservation measures.

November 16, 2025 / 13:45 IST
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Bird migration (Image: X/Kabir9698)
Bird migration (Image: X/Kabir9698)

Scientists tracked over 1.2 billion birds migrating in September 2025. The record migration was observed across large portions of North America. Weather radar systems allowed researchers to measure numbers and movement accurately.

How Researchers Monitored The Massive Migration?

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The team used NEXRAD weather radar for bird detection at night. Radar waves bounce back when birds pass, showing location and altitude. Algorithms filter out weather signals to reveal bird density and speed.

Which Birds Were Part Of The Surge?