Almost 1,000 migrating songbirds have perished after smashing into windows at an exhibition center on Chicago's lakefront. According to officials at the Chicago Field Museum, 964 birds were found dead Thursday at the McCormick Place Lakeside Center. David Willard, the museum's collections manager emeritus, says the most dead birds anyone has found at one time at the center in the last 40 years was around 265. Experts say conditions were optimal for songbirds to launch their annual fall nocturnal migration to Central America on Wednesday evening. Pre-dawn rain pushed them down into the city, where they became confused by the center's lights.
The Associated Press is an independent global news organization dedicated to factual reporting. Founded in 1846, AP today remains the most trusted source of fast, accurate, unbiased news in all formats and the essential provider of the technology and services vital to the news business. More than half the world’s population sees AP journalism every day.In this image provided by the Chicago Field Museum, the bodies of migrating birds are displayed, Thursday, Oct.
Birds that migrate at night, like sparrows and warblers, rely on the stars to navigate. Bright lights from buildings both attract and confuse them, leading to window strikes or birds flying around the lights until they die from exhaustion — a phenomenon known as fatal light attraction. In 2017, for example, almost 400 passerines became disoriented in a Galveston, Texas, skyscraper’s floodlights and died in collisions with windows.
Small songbirds feed during the day and migrate at night to avoid air turbulence and predators. They’ve been waiting for northerly winds to give them a boost south, Temple said, but September saw unusually warm southern winds that kept birds in a holding pattern here. On Wednesday evening a front swept south, providing a tailwind, and thousands of birds took to the skies.
Pre-dawn rain forced the birds to drop to lower altitudes, where they found the McCormick Center’s lights on, Willard said. According to the field museum’s count, 964 birds died at the center. That’s about 700 more than have been found at the center at any point in the last 40 years, Willard said. Members of 33 species died, according to the field museum; most of them were palm and yellow-rumped warblers.
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