Hi Andy,
I always thought the chicken was in the middle. to me, the neck and head are here. but now you've got me thinking. where is the running chicken
http://www.martinpughastrophotograph.../IC2948-HA.jpg
surprised that you didn't get more details with 3 hours with an OSC as this is a fairly bright object. do you have a link to a raw unprocessed but stacked version?
cheers
Alistair
edit: I think the chicken is a bit more apparent in this version, I see a chicken with wings outstretched...
http://members.pcug.org.au/~stevec/ic2948_STL11K_RC.htm