There are four types of kingfishers in North America.
The Belted Kingfisher can be found throughout the continent into
Mexico excluding the northern tundra regions.
The Ringed Kingfisher is the largest of the species and the Green Kingfisher and the Amazon Kingfisher, which are similar in looks but larger in size. Both these birds live in Mexico and can be found in the southern boundaries of the United States.
ABA - American Birding Association This site represents an organization that maintains official records of all birds species that have been proven to have been seen inside the perimeters of the North American Continent and the surrounding bodies of water. Regular revised versions are posted to keep the bird list current at all times. This is the list used by all serious birders over their lifetime. You may be aware of the movie called the "Big Year". It was with this list that all the competing birders used in an attempt to set a new record as to how many bird species that could be seen by an individual birder in one calendar year.