It turns out what you guys need is a Heron

[balsum fractus]

 

https://www.facebook.com/photo.php?v=10204262495191468

[Onepoint]

Heh, well we have some, but they are more interested in cleaning out the frogs from the pond.   I never knew they would hunt rodents like that, we get white herons that will cover the field like geese when they pass through, but I don't notice a drop in gopher population.