If you arrive first thing in the morning, a large flock of West Indian Whistling-Ducks may be assembled on the dyke before dispersing across the lake.  Masked Ducks can usually be found in areas of floating vegetation.

The dyke also provides grassy edge habitat for finches, and an impressive number of exotic species can be found, including: Northern Red Bishop (common), Orange-cheeked Waxbill (abundant), Bronze Mannikin, Indian Silverbill, Scaly-breasted Munia, Chestnut Munia, and Pin-tailed Whydah.

Tower Trail.  The second parking lot gives access to the terrestrial habitats of the refuge, as well as an observation tower that overlooks the lake.

Unfortunately, the lake has receded and the observation tower is now set back from the shore by a considerable distance (> 50 m), which makes it essentially useless for observation of waterbirds.  With powerful optics, visitors can often discern West Indian Whistling-Ducks from the tower—but the view is much better from the dyke.

In addition to the lonely tower, service roads wind across open fields and beside brushy areas that can be productive (particularly if you are fond of doves).  Some of the less widely common species that occur regularly include Mangrove Cuckoo, Caribbean Elaenia, Puerto Rican Flycatcher, and Puerto Rican Oriole.