So do ducks. It depends on what the animal is doing. Cows stand around and walk for miles this they are red meat. Ducks migrate 100s of miles thus are red meat. A chicken on the other hand only needs it’s muscles for short flights and such and even then it’s legs and thighs which support its weight all the time are considered dark meat aka approaching red meat.
Their bones and meat were similar to birds today, who dinosaurs became. So white meat.
As a Counterpoint: ostriches are birds, are close to some dinosaurs in form and they have red meat.
So do ducks. It depends on what the animal is doing. Cows stand around and walk for miles this they are red meat. Ducks migrate 100s of miles thus are red meat. A chicken on the other hand only needs it’s muscles for short flights and such and even then it’s legs and thighs which support its weight all the time are considered dark meat aka approaching red meat.