Lawn Sharks of Hawaii

I'm not sure what kind of birds these are, but they crack me up. They're everywhere around here. They seems to especially love those who are out mowing their lawn. I'm assuming they go after the bugs and such after the mower has passed. It is just sooo funny to see them following around after someone mowing. We only had 3 but there are some guys who've had like 6-10 trotting behind them. Eric called me on his cell from outside and told me to look out the window and check out the birds that were "sharking him." Just thought I'd share the fun.