That's a pretty impressive shot, plenty of Geese in the picture, shame they were flying away from you and not forward ways on. I got an R5 in December and was toying with getting either the 600mm or 800mm lens but ended up with the RF 100-500 L IS and a 1.4x converter instead. Sadly, due to lockdown I haven't been able to get the best from it yet, but hopefully I can soon.