There are 3 species of Bahama hummingbirds. They are the Bahama Woodstar, the Inagua Woodstar and the Cuban Emerald.
The Bahama Woodstar (Callephlox evelynae) is the most common species living primarily in the Bahamas. This spectacular hummingbird can be seen around the Bahamas including the Turks and Calcos Islands. They tend to be less plentiful on the Grand Bahamas, Abaco and Andros Islands. This hummingbird species cannot be found on the Inagua Island. Interestingly, they have been spotted occasionally as a vagrant in Southern Florida, United States.
The Inagua Woodstar (Calliphox lyrura)is so similar to the Bahama Woodstar that it was, until recently, considered to be a subspecies. On account of its' slight differences in anatomy and courtship vocalizations and displays,today is considered to be a unique species found on the Inagua Islands.
The Cuban Emerald (Chlorastilbon ricordi) hummingbirds are found abundantly throughout the Andros, Abaco, and Grand Bahamas Islands. Actually, these small birds are aggressive enough to prevent the Bahama Woodstar to reside on these islands. The Cuban Emerald has been seen as a vagrant in South Florida, United States.
All 3 Bahamas hummingbirds enjoy the nectar from the lush blooms growing abundantly in the Bahamas. They particularly feast on flowers with a tubular shape because these blooms usually have the high nectar count necessary for hummingbirds.
The Bahama Woodstar, the Inague Woodstar, and the Cuban Emerald partake in nectar from hummingbird feeders provided by locals and in parks such as the Inagua National Park.
All hummingbirds need to eat insects for protein and Bahamas hummingbirds are no exception. All the hummingbirds of the Bahamas, like all wild birds, need water for drinking and bathing.
The male hummingbird is responsible for finding a good feeding territory with nectar, insects and a reliable water source
The female hummingbirds, as in all hummingbird species, chooses her mates. The males fly in a U shaped dance to initially attract the female. After mating, the male and female go separate ways.
The female Bahamas hummingbirds build a nest of plant fibers and animal hairs alone with no help from the male. She usually lays 2 eggs which she incubates for a few weeks. For more information about hummingbird nesting and baby hummingbirds read this.
The Bahama Woodstar makes a distinct hummingbird sound while it is feeding. For this reason, it has been named "The Hummer" by the locals. It also makes a different metallic sound with its' tail during courtship display flights.
The male Inagua Woodstar has a tail that is more forked than the male Bahama Woodstar. As a result, the sounds made by the tail of this bird are more highly pitched during mating display flights. Also, the male Inagua Woodstars have different calling sounds. While the calling sounds of the Bahama Woodstar are classic in terms of hummingbirds, those of the Inagua Woodstar sound wet and squishy. This means that each bird has its' own sounds and attract only their own species.
It was partially through the study of the vocalizations of both birds that scientists were able to conclude that the Inagua Woodstar is indeed its' own species.
The Inagua Woodstar is found only on the Inagua Islands, in the southern end of the District of the Bahamas.
Here is the very interesting paper that was submitted in 2015; A result of studying the morphology, calls, song, mechanical sounds and genetics of the Inagua Woodstar.
Divergence in morphology, calls, song, mechanical sounds, and genetics supports species status for the Inaguan hummingbird (Trochilidae: Calliphlox ‘‘evelynae’’ lyrura) - The Inagua Woodstar Paper