The bill H. 3991, introduced in the South Carolina House of Representatives, aims to declare the nights of March through May and August through October as "Lights Out Nights in South Carolina Season." The resolution encourages residents to turn off nonessential lights during these periods to protect migratory birds, which are significantly affected by light pollution. The bill highlights the importance of reducing light pollution to prevent bird collisions with buildings and structures, as many migratory songbirds travel at night and rely on celestial cues for navigation.

The resolution emphasizes the ecological significance of South Carolina's natural habitats and the need for responsible lighting practices due to increasing light pollution from rapid population growth and development. It also notes the broader benefits of reducing light pollution, including improved mental and physical health for humans, support for declining insect populations, and enhanced stargazing opportunities. The bill is supported by Audubon South Carolina and its affiliated chapters, which advocate for Lights Out programming to promote safer migration for birds.