TURQUOISE-BROWED MOTMOT (Eumomota superciliosa) - ©grabertimages.com
The Turquoise-browed Motmot is a well-known bird in its range and has been chosen as the national bird of both El Salvador and Nicaragua. It has acquired a number of local names including guardabarranco (“ravine-guard”) in Nicaragua, torogoz in El Salvador (based on its call) and pájaro reloj (“clock bird”) in the Yucatán, based on its habit of wagging its tail like a pendulum. In Costa Rica it is known as Momoto Cejiceleste.
Unlike most bird species, where only males express elaborate traits, the Turquoise-browed Motmot expresses the extraordinary racketed tail in both sexes. Research indicates that the tail has evolved to function differently for the sexes.
The flight feathers and upperside of the tail are blue. The tips of the tail feathers are shaped like rackets and the bare feather shafts are longer than in other motmots. Although it is often said that motmots pluck the barbs off their tail to create the racketed shape, this is not true; the barbs are weakly attached and fall off due to abrasion with various surfaces and with routine preening.
Fact Source: http://en.wikipedia.org/wiki/Turquoise-browed_Motmot
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