Adelaide Crows
I've never liked the old Crows logo, it was weirdly unbalanced, the lack of contrast in the crow's head just turns it into a random spiky shape and anything other than relatively large sizes.
The new logo hasn't been without its critics, but I'm not really sure why, I think its a huge improvement. It calls back to their older logo, the colours are better, the overall blaance feels better, and it looks like a crow.
Probably my only critique would be the kerning on "Adelaide" just not feeling quite right, but thats a small thing.