Greensboro, NC Parks and Recreation Department has several very nice nature-oriented facilities for public use. One I like to visit from time to time is Higgins Lake.
Lake Higgins is a 226-acre municipal reservoir. Walking the shoreline presented me with several nice photo compositions. It was fun standing below a tall pole with Purple Martin Houses while the birds flew around. I learned the birds eat a massive amount of flying insects daily such as mosquitoes, capturing their prey while on the wing.