Quote: 2x3's should be fine. I have them in one of my coops and 3 of my Favs are in there. They are pretty big birds and it's fine. So I wouldn't change them out. If they were 2x2's I definitely would.
I went and measured. The actual dimension is 1.5" x 2.5". I *think* that is considered a 2x3 in lumber measurements, but not sure.
My daytime (in the run) roost bars are 2x2s - I know those need to be replaced.