I saw a news story this morning about a town in Northern California which (again) has been invaded by Egrets and Herons. I did a Google search for "egret heron invasion Northern California" to find out more about it and got 15,000 hits. Many of them come from other continents. Their populations are growing everywhere in the US, thanks to their protected species status. They maim and eat our pond fish. Your tax dollars at work.