I was quite stoked to go the Mangrove which has been accumulating nice species for the last two years. The Crested bobwhite and the male Blue Ground Dove were as close to target species as it gets for me, as I had never seen either. However, my first visit was quite unsuccessful: the grassquits were all over the place and the doves were fair game too (though disappointingly I only saw female ground doves!), but I couldn't find any other free roamers. The second visit later in the afternoon was more successful as it produced sightings of Northern cardinal, a pair of ground doves and after a lot searching a brief glimpse of a bobwhite. The bobwhites actually have a very loud high pitched call which can be heard all over the Mangrove, but seeing them can be difficult! Also saw my first tropical gar.
My suggestion for the bobwhites is to go onto the adventure path, stop at the stepping stones over the stream and try and get a glimpse of the plant-free area against the wall, that's where you'll best find them (as well as behind the butterfly signage before the adventure path)
Other free-roamers can be found in different spots. The violacious euphonia in the forest area near the manatee viewing window, the honeycreepers in the plants behind the benches close to the exit, the indigo buntings are a rare sight but can show up anywhere. I personally haven't seen the anolises yet, and no-one has spotted the geckos. The basilisks are most reliably found in the rocks around the small pond next to the main path. Blue ground pigeons are best seen in the second area of the adventure path
The old Hispid cotton rat enclosure now has a sign for Merriams kangaroo rats, though I didn't see any. It is also signed in their old enclosure and I saw one in there.
I'm fairly certain the kangaroo rats have one enclosure, that loops around the milk snake exhibit
Other highlights of the day: a party of three catbirds mobbing a sunbittern in the Bush
Congrats! The catbirds are quite hard to spot and the sunbitterns are becoming rarer since the new Bush restaurant (they hang around the roof a LOT)