Adelie penguins walk in a line

Adelie penguins walk in a line on the ice in Antarctica. Researchers study individuals like these to understand how environmental conditions, affected by global warming, impact their behavioral patterns. [Research supported by U.S. National Science Foundation grants OPP 1543498 and OPP ...This is an NSF Multimedia Gallery item.
Source: NSF Multimedia Gallery - Category: Science Source Type: video