scholarly journals Song duration mediates responses of territory owner in a songbird species with a small song repertoire

2017 ◽  
Vol 20 (2) ◽  
pp. 137-145 ◽  
Author(s):  
Tomasz S. Osiejuk ◽  
Aleksandra Jakubowska
Keyword(s):  
Song Repertoire ◽  
Territory Owner

scholarly journals Fitness Correlates of Song Repertoire Size in Free‐Living Song Sparrows (Melospiza melodia)

2005 ◽  
Vol 165 (3) ◽  
pp. 299-310 ◽  
Author(s):  
Jane M. Reid ◽  
Peter Arcese ◽  
Alice L. E. V. Cassidy ◽  
Sara M. Hiebert ◽  
James N. M. Smith ◽  
...  
Keyword(s):  
Melospiza Melodia ◽  
Repertoire Size ◽  
Free Living ◽  
Song Repertoire ◽  
Song Sparrows

Individual Variation in the Strength of Territory Defense in Male Song Sparrows: Correlates of Age, Territory Tenure, and Neighbor Aggressiveness

Behaviour ◽  
2004 ◽  
Vol 141 (1) ◽  
pp. 15-27 ◽  
Author(s):  
Jeremy Hyman ◽  
Melissa Hughes ◽  
Stephen Nowicki ◽  
William Searcy
Keyword(s):  
Individual Differences ◽  
Reproductive Success ◽  
Extrinsic Factors ◽  
Territory Defense ◽  
Intrinsic Factors ◽  
Territorial Aggression ◽  
Male Song ◽  
Song Sparrows ◽  
Territory Owner ◽  
Older Males

AbstractIn many species, the ability to defend a territory is essential for a male to obtain any reproductive success at all, and even among territorial individuals, variation in the strength of territory defense could have a significant impact on how much reproductive success is obtained. Previous studies have documented consistent individual differences in the vigor with which male song sparrows (Melospiza melodia) defend their territories, as measured by the strength of their reactions to territorial intrusions simulated through song playback. Variation in the strength of defense could reflect intrinsic differences among individuals in their resource holding potential (RHP), or variation in extrinsic factors. In this study, we examined whether variation in the strength of territory defense corresponds to differences in intrinsic factors such as the age or experience of the territory owner, the extrinsic factor of the level of aggression shown by neighbours, or both. Results indicate that males that previously held territories on the study site, regardless of whether they were holding the same territory as the previous year, show higher levels of territory defense than males that are new to the study site, and, assuming that returning males are older males, suggest that age is more important than experience on a specific territory in determining strength of territory defense. In addition, we found evidence that males with high levels of territorial aggression tend to be spatially clustered. The pattern observed suggests that a combination of intrinsic and extrinsic factors contribute to the expression of individual differences in territorial aggression.

Learn it now, sing it later? Field and laboratory studies on song repertoire acquisition and song use in nightingales

2014 ◽  
Vol 101 (11) ◽  
pp. 955-963 ◽  
Author(s):  
S. Kiefer ◽  
C. Scharff ◽  
H. Hultsch ◽  
S. Kipper
Keyword(s):  
Laboratory Studies ◽  
Song Repertoire

Age-related variation in song repertoire size and repertoire sharing of yellow warblers (Dendroica petechia)

1986 ◽  
Vol 64 (9) ◽  
pp. 1926-1929 ◽  
Author(s):  
Susan E. Cosens ◽  
Spencer G. Sealy
Keyword(s):  
Reproductive Success ◽  
Dendroica Petechia ◽  
Repertoire Size ◽  
Song Repertoire ◽  
Fledging Success ◽  
Related Variation ◽  
Age Related ◽  
Yellow Warblers ◽  
Clutch Initiation

Songs of male yellow warblers (Dendroica petechia), ranging from 1 to 6 years of age, were recorded in the spring and summer of 1984. Recorded repertoire size and number of songs shared with neighbours varied positively with age in the spring but not in summer. Neither clutch initiation date nor fledging success varied with age or number of songs shared but both measures of reproductive success varied with size of recorded song repertoire.

scholarly journals Song Variation Among CISTOTHORUS Wrens, With a Focus on the MÉrida Wren

The Condor ◽  
2001 ◽  
Vol 103 (4) ◽  
pp. 855-861
Author(s):  
Donald E. Kroodsma ◽  
Krista Wilda ◽  
Viviana Salas ◽  
Roldan Muradian
Keyword(s):  
Population Density ◽  
Repertoire Size ◽  
Song Repertoire ◽  
Song Variation ◽  
New Type ◽  
Song Types ◽  
Site Faithfulness

Abstract Evidence from two Cistothorus wrens (C. palustris, C. platensis) has suggested that repertoire size increases with population density and that song imitators are more likely to be site faithful than are song improvisers. We tested these two ideas on a third species, C. meridae, an endemic to the Venezuelan Andes. Of the three Cistothorus wrens, song repertoire sizes of male Mérida Wrens are the smallest, ranging from 18 to 27 song types per male; Mérida Wrens are also most likely to repeat each type several times before switching to a new type. Density of Mérida Wrens was also lowest, from 0.4 to 2.0 territories per 10 ha. These wrens are highly site faithful, with marked microgeographic song variation. Female Mérida Wrens also sing. Overall, data from the Mérida Wren support the ideas that, among Cistothorus wrens, song repertoire sizes increase with population density and site faithfulness promotes song imitation. Variación en el Canto en Cistothorus, con Énfasis en C. meridae Resumen. La evidencia proveniente de dos especies del género Cistothorus (C. palustris, C. platensis) sugiere que el tamaño del repertorio aumenta con la densidad poblacional y que los imitadores de cantos tienen una mayor probabilidad de ser territoriales que los que improvisan. Estas dos ideas fueron probadas en una tercera especie endémica de los Andes venezolanos, C. meridae. El tamaño del repertorio del canto de esta especie, con 18 a 27 tipos de canto por macho, es el más pequeño de estas tres especies. C. meridae también tiene una mayor probabilidad de repetir cada tipo de canto varias veces antes de cambiar a un tipo nuevo. La densidad de C. meridae también fue la menor, con 0.4 a 2.0 territorios por cada 10 hectáreas. C. meridae es muy territorial, con una marcada variación microgeográfica en las cantos. Las hembras de esta especie también cantan. En resumen, estos datos apoyan las ideas de que en el género Cistothorus, el tamaño del repertorio del canto aumenta con la densidad poblacional y que la territorialidad promueve la imitación de cantos.

scholarly journals Trill consistency is an age-related assessment signal in banded wrens

2009 ◽  
Vol 276 (1665) ◽  
pp. 2315-2321 ◽  
Author(s):  
Selvino R. de Kort ◽  
Erin R.B. Eldermire ◽  
Sandra Valderrama ◽  
Carlos A. Botero ◽  
Sandra L. Vehrencamp
Keyword(s):  
Sexual Selection ◽  
Competitive Advantage ◽  
Phenotypic Trait ◽  
First Year ◽  
Repertoire Size ◽  
Song Repertoire ◽  
Age Related ◽  
Related Trait ◽  
Structural Aspects ◽  
Older Males

Older males tend to have a competitive advantage over younger males in sexual selection. Therefore, it is expected that signals used in sexual selection change with age. Although song repertoire size in songbirds is often mentioned as an age-related trait, many species, including the banded wren ( Thryothorus pleurostictus ), do not increase their repertoires after the first year. Here, we show that banded wrens reproduce the trill notes in their songs with less variability between them (i.e. more consistently) when they grow older. In a playback experiment, we also show that banded wrens discriminate between younger and older birds based on structural aspects of their song. In a second experiment, banded wrens also respond differentially to natural songs versus songs with artificially enhanced consistency. We argue that consistency in trill note reproduction may be achieved through practice. Sexual selection in the form of male–male competition may therefore operate on a phenotypic trait, the expression of which is enhanced by practice.

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