Thanks all. Great to see you're over here Danny! I've missed seeing your posts in the DPR Sony forums. BTW, that shot particularly was with the APS-C A6600 and the 100-400mm GM lens - I mostly use the 200-600mm, but for BIF, at least in my area where the birds are often too close, I use the 100-400mm a little more.
Thanks Quatpat - hopefully as the site grows and sorts out everything, they may up the default posted size for linked photos, increase the photo upload size limit, and/or make the photos clickable to larger size display. I'm willing to give them some time to figure all that out - this site has grown from 0 to to 60 in no time at all, so it's reasonable to expect they'll work out more things once it's been running a while, and also once Dpreview shuts down and more migrants might start coming over!