A close up of the beak, and of the legs - but really between the ages 1.5 and 3 years, it would be hard, and I think inaccurate to say, this bird is that age. After 3 year, they just look old, they walk old, and they can be cranky.
I look at their legs and beaks, but it is a guess. In my mind the brown looks younger than the black and gray.
IT is not uncommon for them to take days to a couple of weeks off from laying after a move to a strange place.
Mrs K