Yep, those look like Pekins to my eye!
Your black/green one looks more like a Cayuga, but the one multicolored male is most likely Rouen, like you said. Got quite the bug eating crew there for your trees! How great that your dogs do well around them too- Girl looks like she's just one of the flock!
Hope your little Khaki gets back in the swing-- stress (which males are a big source of!) can induce them to molt and stop laying for awhile, so she'll likely get back on track before too long.
I noticed your trees are in buckets in the ground-- and I think I remember you saying they are dwarf varieties. Can they stay in the bucket like that indefinitely, or do they outgrow them eventually? We don't have quite the climate for citrus, but we're hoping to add some mulberries, figs, and apple trees to our place for some extra scavenging for the chickens and goats.
Sounds like you'll have quite the asparagus crop when they get all settled! Good luck with starting some from seeds, I've heard that's rather difficult. Can't hurt to try, maybe you've got a special knack for it.