Sandhill cranes can be easily recognized by their what color patches on their heads?

Sandhill cranes are prominently recognized by the distinctive red patches on their heads. These vibrant red areas are a key feature that distinguishes them from other bird species, making identification relatively straightforward. The coloration of these patches is striking and contrasts with the more muted grayish body feathers of the cranes, further enhancing their visibility and uniqueness. Understanding this characteristic can aid bird watchers and ornithologists in identifying the species in the wild and appreciating their role in ecosystems. The other colors listed, while they might apply to different bird species, do not accurately describe the notable head markings of the sandhill crane.