How to Tell Male From Female Canadian Geese

1. Size: Male Canadian geese are typically larger than females, with longer necks and heads and larger overall body size.

2. Coloration: Male Canadian geese have darker heads and necks than females. Their breast feathers also tend to be darker, and the white patch on their bellies is usually larger. Females have lighter heads, necks, and breasts, and the white patch on their belly is usually smaller.

3. Bill: Male Canadian geese have a longer and thicker bill than females. The bill of a male is typically black, while the bill of a female is often dark brown.

4. Behavior: During breeding season, male Canadian geese are typically more vocal and territorial than females. They will often compete for mates by trumpeting, displaying their feathers, and chasing each other. During the non-breeding season, females often lead the flock in flight.

5. Voice: Male Canadian geese have a lower, more resonant voice than females. The female's voice is higher and more nasal.

Note: These are just general guidelines and there can be some variation in appearance and behavior between individual Canadian geese.