well made and fun :p
I really like the humor, the character sprite is really expressive and it's really a hilarious take on the theme to actually play as Darwin and have him platforming walljumping and all... in his old age XD
The catching mechanics are also well done, i like the fact that if you don't sneak around the birds do react and fly away, and it's nice to see the exact range of the net with the right click.
If i had to nitpick i'd say the only issue i had was the walljump mechanic, it feels a bit odd to pull of consistently, so this made the tutorial really hard since you have to do it to move on to the next part of the level.
Other than that it's solid overall and i had a good time playing it. Good job :)