The image isn't sharp enough to my taste but it's OK. Hidden in the high grass, I didn't have a 100% clear view either...
1/3200 sec would have given a better result.
Tomorroww I'll go back with a tripod...
The RF 800mm F11 is an amazing lens and a dream to walk around because of it's lightweight and IQ.
The scene:

The crops, resized from +2500 px to 1000px longest side.