The
motmots or Momotidae are in the order Coraciiformes, which also includes the kingfishers, bee-eaters and rollers. All living motmots are restricted to woodland or forest in the Neotropics. The largest diversity is in Middle Americo. They have a colorful plumae and a relatively heavy bill. All except the Tody Motmot have relatively long tails that in some species has a distinctive racket-like tip.

Motmots often move their tail back and forth in a wag-display that commonly draws attention to an otherwise hidden bird. Research indicates that motmots perform the wag-display when they detect predators (based on studies on Turquoise-browed Motmot) and that the display is likely to communicate that the motmot is aware of the predator and is prepared to escape. This form of interspecific pursuit-deterrent signal provides a benefit to both the motmot and the predator: the display prevents the motmot from wasting time and energy fleeing, and the predator avoids a costly pursuit that is unlikely to result in capture.
Wikipedia

Family Momotidae
Genus Hylomanes
Tody Motmot, Hylomanes momotula
Genus Aspatha
Blue-throated Motmot, Aspatha gularis
Genus Momotus
Russet-crowned Motmot, Momotus mexicanus
Blue-crowned Motmot, Momotus momota
Genus Baryphthengus
Rufous Motmot, Baryphthengus martii
Rufous-capped Motmot, Baryphthengus ruficapillus
Genus Electron
Keel-billed Motmot, Electron carinatum
Broad-billed Motmot, Electron platyrhynchum
Genus Eumomota
Turquoise-browed Motmot, Eumomota superciliosa