Vocalizations and Associated Behaviors of the Sombre Hummingbird (Aphantochroa Cirrhochloris) and the Rufous-Breasted Hermit (Glaucis Hirsutus)

Ferreira, Adriana R. J.; Smulders, Tom V.; Sameshima, Koichi; Mello, Claudio V.; Jarvis, Erich D.

doi:10.1642/0004-8038(2006)123[1129:vaabot]2.0.co;2

Cited by 14 publications

(5 citation statements)

References 39 publications

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“…Differences encountered for these species may be related to their aggressiveness and their abilities to face different intruder species, which vary between territorial hummingbirds. Vocalisation seems to be the simplest, lowest-cost and commonest defence behaviour, used to alert a possible intruder at greater distance (Stiles and Wolf 1970;Wolf and Hainsworth 1971;Kodric-Brown and Brown 1978;Ornelas et al 2002;Ferreira et al 2006). Other agonistic behaviours were used only when the floral abundance and number of the intruders increased.…”

Section: Discussionmentioning

confidence: 99%

Floral resource availability and hummingbird territorial behaviour on a Neotropical savanna shrub

2011

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The influence of floral resource availability on behaviour and dominance hierarchy of hummingbirds has seldom been investigated in open tropical environments. We evaluated the behavioural changes of hummingbirds associated with Palicourea rigida, a shrub common in the Cerrado, the open savanna areas in Central Brazil. We observed the foraging behaviour as a function of resource availability and experimentally manipulated floral display and nectar in order to define resource thresholds associated with territorial behaviour and territory intruding behaviour. Territorial behaviour was observed only in patches with high floral abundance and was restricted to some hummingbird species. The large Eupetomena macroura seems to be the dominant species in the community, excluding other hummingbirds and holding the richest patches. The experimental reduction in the floral abundance and nectar led to the abandonment of territory by these hummingbirds, which reinforces the idea that a certain threshold is necessary to maintain territorial defence. Higher floral display, on the other hand, seems to lead to higher frequency of intrusions and higher behavioural complexity of territory defenders, possibly meaning greater energy expenditure. The flower number and nectar manipulation affected visitation rates of territorial hummingbirds, but the frequency of intruders was affected only by the former manipulation. This indicates that territorial intruder use visual cues (floral abundance) as indicators of resource availability in order to estimate cost-benefit of territory invasion. Although territorial behaviour could limit pollen flow in patches with larger floral displays, this may be compensated by the territory invaders, which bring pollen from other patches. Zusammenfassung Der Einfluss von Ressourcenverfügbarkeit von Blüten auf das Verhalten und die Dominanzhierarchie von Kolibris in offenen, tropischen Landschaften ist bisher nur selten untersucht worden. Wir erfassten Verhaltensveränderungen von Kolibris in Assoziation mit Palicourea rigida, einem häufiger Strauch in der Cerrado, der offenen Baumsavanne in Zentralbrasilien. Wir untersuchten das Foragierverhalten als eine Funktion der Ressourcenverfügbarkeit. Dazu manipulierten wir Blüten-und Nektarverfügbarkeit experimentell um Schwellenwerte von Ressourcenverfügbarkeit, assoziiert mit Territorialverhalten, zu schätzen. Territorialverhalten wurde nur an Stellen mit hoher Blütenabundanz beobachtet, und war beschränkt auf nur einige Kolibriarten. Der große Eupetomena macroura scheint die dominante Art in der Gemeinschaft zu sein: diese Art schloss andere Kolibriarten aus und besetzte die reichsten Stellen. Die experimentelle Verringerung von Blüten-und Nektarverfügbarkeit führte zum Verlassen von Territorien durch diese Kolibris, welches die Idee eines Schwellenwertes, für die Entstehung von Territorialverhalten unterstützt. Vermehrte Blü-tenverfügbarkeit jedoch führte scheinbar zu einer höheren Frequenz von Intrusions, und zu höherer Komplexität des Verhaltens des Verteidiger...

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Section: Discussionmentioning

confidence: 99%

Floral resource availability and hummingbird territorial behaviour on a Neotropical savanna shrub

2011

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“…For both analyses, we generated a custom script in Microsoft Excel (2003) that detects silences (gap >250 ms), and letter-coded sequences of syllables and silence (e.g., s-d-u-m-s-Silence…). Then, for the general probability analyses , we used an approach modified from Ferreira et al ( 2006 ) to estimate the overall probability of occurrence of each transition type as the ratio of the total of number transitions of that type to the total number of transitions of all types:…”

Section: Methodsmentioning

confidence: 99%

Male mice song syntax depends on social contexts and influences female preferences

Chabout

Sarkar

Dunson

et al. 2015

Front. Behav. Neurosci.

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184

300

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In 2005, Holy and Guo advanced the idea that male mice produce ultrasonic vocalizations (USV) with some features similar to courtship songs of songbirds. Since then, studies showed that male mice emit USV songs in different contexts (sexual and other) and possess a multisyllabic repertoire. Debate still exists for and against plasticity in their vocalizations. But the use of a multisyllabic repertoire can increase potential flexibility and information, in how elements are organized and recombined, namely syntax. In many bird species, modulating song syntax has ethological relevance for sexual behavior and mate preferences. In this study we exposed adult male mice to different social contexts and developed a new approach of analyzing their USVs based on songbird syntax analysis. We found that male mice modify their syntax, including specific sequences, length of sequence, repertoire composition, and spectral features, according to stimulus and social context. Males emit longer and simpler syllables and sequences when singing to females, but more complex syllables and sequences in response to fresh female urine. Playback experiments show that the females prefer the complex songs over the simpler ones. We propose the complex songs are to lure females in, whereas the directed simpler sequences are used for direct courtship. These results suggest that although mice have a much more limited ability of song modification, they could still be used as animal models for understanding some vocal communication features that songbirds are used for.

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“…, [12] ), but hummingbirds in which vocal learning has evolved independently [27] – [28] have been rarely studied [14] . Like parrots and songbirds, hummingbirds have also developed the trait of vocal learning [27] , and although they sing apparently single-note songs [29] – [31] , there are species intermediate in vocal complexity [30] , [32] – [33] , and species rivaling passerines with intricate, phonologically and syntactically complex songs [14] , [27] , [30] , [34] – [38] .…”

Section: Introductionmentioning

confidence: 99%

Acoustic Divergence with Gene Flow in a Lekking Hummingbird with Complex Songs

González

Ornelas

2014

PLoS ONE

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Hummingbirds have developed a remarkable diversity of learned vocalizations, from single-note songs to phonologically and syntactically complex songs. In this study we evaluated if geographic song variation of wedge-tailed sabrewings (Campylopterus curvipennis) is correlated with genetic divergence, and examined processes that explain best the origin of intraspecific song variation. We contrasted estimates of genetic differentiation, genetic structure, and gene flow across leks from microsatellite loci of wedge-tailed sabrewings with measures for acoustic signals involved in mating derived from recordings of males singing at leks throughout eastern Mexico. We found a strong acoustic structure across leks and geography, where lek members had an exclusive assemblage of syllable types, differed in spectral and temporal measurements of song, and song sharing decreased with geographic distance. However, neutral genetic and song divergence were not correlated, and measures of genetic differentiation and migration estimates indicated gene flow across leks. The persistence of acoustic structuring in wedge-tailed sabrewings may thus best be explained by stochastic processes across leks, in which intraspecific vocal variation is maintained in the absence of genetic differentiation by postdispersal learning and social conditions, and by geographical isolation due to the accumulation of small differences, producing most dramatic changes between populations further apart.

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Vocalizations and Associated Behaviors of the Sombre Hummingbird (Aphantochroa Cirrhochloris) and the Rufous-Breasted Hermit (Glaucis Hirsutus)

Cited by 14 publications

References 39 publications

Floral resource availability and hummingbird territorial behaviour on a Neotropical savanna shrub

Floral resource availability and hummingbird territorial behaviour on a Neotropical savanna shrub

Male mice song syntax depends on social contexts and influences female preferences

Acoustic Divergence with Gene Flow in a Lekking Hummingbird with Complex Songs

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