Clutch Size and Fledging Success in the Turquoise-Browed Motmot
نویسندگان
چکیده
منابع مشابه
Predator-elicited visual signal: why the turquoise-browed motmot wag-displays its racketed tail
Both sexes of the turquoise-browed motmot (Eumomota superciliosa) perform a wag-display in the presence of predators, whereby their long racketed tail is repeatedly rocked side-to-side in a pendulous fashion. I tested 3 hypotheses for the function of the predator-elicited wag-display: 1) pursuit-deterrent signal, 2) warning alarm signal, and 3) self-preservation alarm signal. These hypotheses w...
متن کاملLack of assortative mating for tail, body size, or condition in the elaborate monomorphic Turquoise-browed Motmot (Eumomota superciliosa)
—Elaborate male and female plumage can be maintained by mutual sexual selection and function as a mate-choice or status signal in both sexes. Both male and female Turquoise-browed Motmot (Eumomota superciliosa) have long tails that terminate in widened blue-and-black rackets that appear to hang, unattached, below the body of the bird. I tested whether mutual sexual selection maintains the Turqu...
متن کاملDishonest ‘preemptive’ pursuit-deterrent signal? Why the turquoise-browed motmot wags its tail before feeding nestlings
Both sexes of the turquoise-browed motmot, Eumomota superciliosa, display their long-racketed tail in an exaggerated side-to-side wag display in two contexts. In the first, the wag display is performed in the presence of predators (predator-elicited wag display), and evidence supports the hypothesis that the signal functions as a pursuit-deterrent signal (Murphy 2006, Behavioral Ecology, 17, 54...
متن کاملLack of melanized keratin and barbs that fall off: how the racketed tail of the turquoise-browed motmot Eumomota superciliosa is formed
The racket-tipped tail of the motmots is uniquely shaped and its formation has attracted much attention. Barbs that grow along the wire of the motmot’s two central tail feathers are weakly attached and shed soon after development. The cause of the weak attachment of these barbs is unclear. I induced feather growth by plucking the central tail feathers from seven turquoise-browed motmots Eumomot...
متن کاملDisplay of an Inedible Prop as a Signal of Aggression? Adaptive Significance of Leaf-Display by the Turquoise-Browed Motmot, Eumomota superciliosa
Many avian species perform elaborate behavioral displays when signaling to conspecifics. Elaborate displays are most often performed by males, and are typically performed during pair-formation or agonistic interactions (e.g. mating flight-display by Jackson’s widowbird (Euplectes jacksoni), Andersson 1992; territorial vocalizations and color signaling by redwinged blackbird (Agelaius phoeniceus...
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ژورنال
عنوان ژورنال: The Auk
سال: 1986
ISSN: 0004-8038,1938-4254
DOI: 10.1093/auk/103.1.8