This is hella fun.
My only issue is overfeeding the sparrows. Needed 2m, accidentally forgot to remove feeding as i turned away for a minuted, resulting in 24m, meaning 22m sparrow xp worth of seeds being wasted.
Oh wait! Overspent lvl go into resonance! Nevermind then!
Fishing is a tad grindy too. Forgot that i had 45 bottles before evolving, so i'm collecting 50 bottles again.
Seeds keep being the bottleneck.
Still. Really fun.