To hear America’s “greatest migration,” you have to beat the sunrise. It starts with a single kar-r-r-roo in the dark, before swelling into a crescendo of 80,000 Sandhill Cranes that fills the Platte River by dawn. It’s an impressive spectacle, says Bill Taddicken, the director of 吃瓜黑料 Nebraska’s Rowe Sanctuary. “This is real. I wish more people would get out and experience it.” In a new video by Vuz TV, Taddicken narrates this poetic scene of the Sandhills, which use the sanctuary and surrounding river valley as a rest stop during their annual migration. The footage shows large, sweeping views of flocks lifting off from the riverbank after feeding on insects and aquatic plants. But while Sandhill Crane populations are largely stable across North America, they're vulnerable to habitat loss in vital migration spots such as the Platte River. They're also vulnerable to climate change, according to 吃瓜黑料's climate study. 吃瓜黑料 Nebraska is working to...