One of the most aggressive species of hummingbird I have encountered while birding in the rainforest is the White-Chested Emerald. They intensely defend their territory by chasing away other birds, even people at times. They are indeed fierce! It is not recorded in Tobago.
This is a monomorphic species, which means the sexes are similar in appearance. They are just about 3.75 inches in length. Their upperparts are mainly green fading into a bronze rump and tail, (from the back it looks very similar to the Copper-rumped hummingbird, but lacks their distinct blue tail). The underparts are white with greenish sides. This species is quite vocal with no particular tune.
So folks, this wraps-up the 17 hummingbirds of Trinidad. I hope you all enjoyed, please feel free to ask any questions!
© Denise Etienne