Mint Springs Park is only a couple of miles from my house, but I don't go birding there very often. The lower and flat part of the park consistes of two good sized fishing/swimming lakes, and some playgrounds, and the birding in those areas isn't very good. The wooded mountain trails, however, can be good for birding, but they are steep and rugged. I haven't there for a while, so I hiked the Fire Trail up to where it is level, and then hiked some distance on the level section before returning along the same route. I ended up with about 20 avian species, including at least 4 warbler species: Worm-eating, Hooded, Black&White, and American Redstart.
Worm-eating Warbler
Hooded Warbler
Scarlet Tanager