Alan, not sure if the complaints comment is directed at me, but I have few and they are relatively minor. The compromises I deal with are the same as everyone has, so certainly not an excuse for poor photos. The challenges in Costa Rica (higher elevations) often related to afternoon cloud coming in so soon.
You get up about 5:30 AM to take advantage of the usually sunny morning and in about two hours there is a good chance the birds and people are not really loving the heat that is developing and the photo opportunities diminish somewhat.
Then until about 2 PM we'd continue walking and searching or just observing everything and hope for afternoon late light because the birds would be eating towards 4 PM but alas ISO 12500 doesn't make for the best photos. That's the part that would be disappointing - so many high ISO shots.
It feels like Alberta summer so by about 7 PM when it's been dark for over an hour it feels like 10:30 PM and time to climb into bed - weird.
I have to be smarter in my programming of my three "shutter" related buttons (thumb and finger), in particular so that I can instantly go from a reasonably higher shutter speed to a risky much lower one that gives me better ISO if the bird doesn't move, but 800mm doesn't really allow a too low shutter speed. It's my brain that is the impediment more than the camera since there can be a lot going on instantly.
Beautiful shots so get after them and post more.
My quickest culling is done with the card in the camera and the HDMI cable connected to the 4K TV. That gives a full size image that is very large to judge focus quality between similar shots and if needed a bit of magnify allows the most minute detail to be examined. You can't reverse a delete though so I make sure the whole nine yards is backed up!
Jack