Hi - Good photos for through a window! First, of course is Adult. Second, on hoop, appears to be first year (hatched 2014), but I would like to see more of the underparts. They should be streaked all the way down the chest and belly. I think the bird on the birdbath is second year (hatched 2013). I am basing this on the underparts pattern and color, which appear intermediate between the red barring of adults and the brown streaking of first-year birds. It still has a yellow Iris - should become red with maturity. Wayne On Sat, Oct 18, 2014 at 12:38 PM, Michel Kleinbaum <mlittletree@xxxxxxxxx> wrote: > https://flic.kr/s/aHsk5t481u > 3 Cooper's hawks taken in our backyard. > How does one age these accipiters?. One is obviously an adult but how > about the other two?. > Apologies for the pic's quality, all were taken through a window. > Michel Kleinbaum > Salem >