Artificial light lures migrating birds into cities, where they face a gauntlet of threats

Scientists don’t yet know why nocturnally migrating birds are attracted to artificial light, but research has shown that light pollution acts as an amplifying agent that draws more songbirds into urbanized areas. It often co-occurs with other environmental threats, such as water and air pollution and noise. All of these stressors disrupt birds’ behavioral and physiological processes during journeys that already are extremely taxing.

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