I've seen a lot of people mention the late-game balance and yeah it was a little overkill (sorry balancing is hard!), and also some general QOL stuff, so I've made some changes to the following;
QOL
Breeding has been reworked;
The breeding now results in a bird NOT an egg, as well as being the same species as a one of the parents and it will generally be more similar to the parents stats (ie gold parent results in a higher chance of a gold child, etc)
The cooldown now shows time remaining instead of total (and can't be circumvented by switching maps anymore), the cooldown has also been increased to offset the lack of egg hatching stage
Birds now stay in breeding mode after breeding
Egg hatching times have been cut by 75% (6 hours for exotic eggs now instead of 30)
Added a button to open the food/potion menu rather than having to click Q/right mouse
Balance
Epic, Legendary, and Exotic egg prices lowered
Sell prices/earnings for birds have been increased for the higher tier birds
Egg hatching times have been cut by 75% (6 hours for exotic eggs now instead of 30)
Increased max bird capacity by 5 for each tier
Misc
Added a delay to "sell all unlocked birds" button so it can't be double clicked and miss the "click to confirm"
Some general bug fixes/improvements