The molt actually last almost half the year starting in early summer where most of what is going on involves serial replacement of flight feathers in wings. During the first three months or so all you will see are occasional wing feathers during this time unless you look at the bird's wings and notice new feathers coming in are darker with shorter ones having area of growth at base. About no many will be loosing body feather and tail feather which is much more obvious. Replacement of those feathers will be complete in 3 months or less. Generally, loss of flight feathers represents the halfway point time wise. Some birds commence tail and body replacement later in season, especially with broody hens. My American Dominique's also tend to commence molt later but get down at about same time as my American Games.
