Consider Pilgrim Geese

Solution

Raise Pilgrim geese, another auto-sexing breed.

Explanation

Pilgrim geese are a medium-sized breed known for their docile temperament. They are decent layers, providing 35-50 eggs per year. Like Shetlands, they are auto-sexing (ganders are white, geese are grey), which is convenient for managing breeding pairs.

Notes

They are also good meat birds due to their medium size.