Would ridgefield wildlife refuge be considered a non profit organization?

It's a government entity. The associated non-profit is Friends of Ridgefield National Wildlife Refuge.

No. It is a federal facility

It is a National Wildlife Refuge of the Fish and Wildlife Service of the US Dept.of the Interior. It Is a federal fee area. US citizens with the annual pass to national parks, BLM and Forest Service sites can use the pass for access to refuges.

Yes

Unknown. But donations are accepted