Male and female Sandhill Cranes are very similar in appearance, but males are typically larger than females. Both sexes have a gray body, long legs, and a long neck. They also have a distinctive red patch on their forehead. While males are generally larger, with an average weight of 3.75 kg compared to the female's 3.3 kg, this difference can be subtle and difficult to discern in the field.

Similarities:
• Plumage: Both sexes have a predominantly gray plumage, with a white cheek patch and a bald red patch on the forehead.
• Body Structure: Sandhill Cranes are characterized by their long legs, necks, and bills.
• Size: While males are generally larger, the size difference can be subtle and not always obvious.
• Coloration: Both sexes have the characteristic red forehead patch, white cheek patch, and gray body feathers.
• Flight: They both fly with their necks outstretched.

Differences:
• Size: Males tend to be slightly larger and heavier than females.
• Vocalization: While both sexes vocalize, the male's call is often higher in pitch and more pronounced during unison calls with his mate.