Got a call today from my friend in Shoreline who had a "weird looking chicken" in the yard. Several hours later, he had not managed to catch it yet, although the chicken was friendly and did seem to enjoy human company. By now it was determined it was a rooster. I came to the rescue around 4:30, got soaking wet while making chicken conversation and caught the also soaked silkie chicken. We put him in a cat carrier.
We called Seattle animal control, who said to contact King County animal control (the one in Kent with the bad reputation). I called Pasado Safehaven and left a message. Ditto with PAWS. He's now listed in Craigslist's lost&found.
This bird is used to people. He loves being petted. Silkies can't fly and are strictly pet/hobby birds. He won't stand a chance against raccoons. We think that, since he's a rooster, he may have been dumped. If he were a she, I would be building a chicken coop now, but since roosters are now allowed in the city (or Shoreline), that's not possible.
Trust me, I have met plenty of roosters whose necks I did not mind wringing, but this chicken is pet quality. Any suggestions as to where to take him? Choking the chicken or assorted chicken dishes are not an option.

