Green-backed Firecrown (Southernmost Hummingbird)

[Donkees]

10. The ''rare neo-tropical species'' hummingbirds mentioned there are listed as travelers ...

or visitors.

''The Berylline Hummingbird first appeared in the U.S. in 1964. Since then it has become almost a regular visitor, with one or two found almost every summer in the mountains of southeastern Arizona.''
https://www.audubon.org/field-guide/bird/berylline-hummingbird

White-eared Hummingbird: Abundant at times in the high mountain forests of Mexico, this little jewel is an uncommon visitor to the southwestern United States. In southern Arizona canyons where hummingbird feeders are maintained, lone White-eareds sometimes show up and remain for weeks at a time. Although the species has been known as a summer visitor to Arizona at least since the 1890s, there have been few proven records of its actually having nested there.
https://www.audubon.org/field-guide/bird/white-eared-hummingbird