It is in South America that you will find the widest variety of hummingbirds and more than half the species are found there. Ecuador, which is located in northwestern South America, has the largest number of any one country with 163 different species.
In Mexico, there are over fifty species that regularly breed there.
There are sixteen or seventeen different species which breed in the United States. The exact number depends on the source you consult. This represents only 5 percent of the total hummingbird population of the world. The Ruby-throated Hummingbird is the only one that breeds east of the Mississippi River.
There are only four species which breed in Canada.