Bird Song
Mostrando 1-12 de 22 artigos, teses e dissertações.
-
1. Comparação e descrição de parâmetros acústicos do canto de Volatinia jacarina (Aves: Emberizidae) no contexto de seleção sexual
Bird songs may convey information about the quality of the male, and females can access this information during partner choice. The aim of this study was to test for correlations between acoustic parameters of songs from Volatinia jacarina males and their physical attributes. First we determined, through quantitative analysis, the degree of stereotypy in the
Publicado em: 2009
-
2. Multimedia treatment of the individual variation of the song of Troglodytes aedon (Troglodytidae) in the city Campinas, State de São Paulo / Tratamento multimidia da variação individual do canto de Troglodytes aedon (Troglodytidae) na cidade de Campinas, Estado de São Paulo
The repertoire of Troglodytes aedon is large and its song, fairly complex, presents inter-individual variations. The singers have been recorded on open-reel NAGRA-E with a dynamic cardioid microphone mounted on an acoustic parabola. The 29 individuals that have been analyzed presented a total of 113 types of notes and 177 song-types. Of the notes, 20 were un
Publicado em: 2007
-
3. Causes and consequences of song amplitude adjustment in a territorial bird: a case study in nightingales
A amplitude vocal, um dos fatores cruciais para a troca de sinais acústicos, tem sido negligenciada nos estudos da comunicação animal, mas trabalhos recentes sobre a variação do canto do Rouxinol-comum Luscinia megarhynchos evidenciaram sua importância no comportamento de canto das aves territoriais. No rouxinol a amplitude do canto não é aumentada a
Anais da Academia Brasileira de Ciências. Publicado em: 2004-06
-
4. Bird song syntax: learned intraspecific variation is meaningful.
Song syntax, defined as orderly temporal arrangements of acoustic units within a bird song, is a conspicuous feature of the songs of many species of passerine birds. While syntactical features play a role in interspecific song recognition by males of many bird species, syntax variation within species and female responsiveness to song syntax have received lit
-
5. Interaction between auditory and motor activities in an avian song control nucleus.
Discrete telencephalic nuclei HVc (hyperstriatum ventrale, pars caudale) and RA (nucleus robustus archistriatalis) have been implicated by lesion studies in the control of vocalization in songbirds. We demonstrate directly the role of HVc in vocalization by presenting neuronal recordings taken from HVc of singing birds. Intracellular recordings from anesthet
-
6. Experimental test of the birdsong error-correction model
Adult zebra finches require auditory feedback to maintain their songs. It has been proposed that the lateral magnocellular nucleus of the anterior nidopallium (LMAN) mediates song plasticity based on auditory feedback. In this model, neurons in LMAN, tuned to the spectral and temporal properties of the bird's own song (BOS), are thought to compute the differ
National Academy of Sciences.
-
7. Selection-based learning in bird song development.
Bird song is a model system for study of the neurobiology, development, and functions of learned vocal communication signals. Research on avian song learning has been dominated by an instructive model of learning--the sensorimotor model. Developmental plasticity is assumed to be based on the incorporation of novel material into the song repertoire. Experimen
-
8. Testosterone facilitates some conspecific song discriminations in castrated zebra finches (Taeniopygia guttata).
An experiment was designed to test for the influence of testosterone on song discriminations. We found that testosterone did have an effect, which interacted with practice and the nature of the stimuli. Fourteen adult castrated zebra finches (Taeniopygia guttata) were grouped into seven pairs. In each pair, one bird was implanted with a testosterone-filled s
-
9. Song selectivity and sensorimotor signals in vocal learning and production
Bird song, like human speech, is a learned vocal behavior that requires auditory feedback. Both as juveniles, while they learn to sing, and as adults, songbirds use auditory feedback to compare their own vocalizations with an internal model of a target song. Here we describe experiments that explore a role for the songbird anterior forebrain pathway (AF
The National Academy of Sciences.
-
10. Auditory representation of the vocal repertoire in a songbird with multiple song types
Neural mechanisms for representing complex communication sounds must solve the problem of encoding multiple and potentially overlapping signals. Birdsong provides an excellent model for such processing, in that many songbird species produce multiple song types. Although auditory song representations in single song type species have been studied, how song is
The National Academy of Sciences.
-
11. A preference for own-subspecies' song guides vocal learning in a song bird
In many song birds, males develop their songs as adults by imitating the songs of one or more tutors, memorized previously during a sensitive phase early in life. Previous work using two assays, the production of imitations by adult males and playback-induced calling by young birds during the sensitive phase for memorization, has shown that song birds c
The National Academy of Sciences.
-
12. Correlation of song learning and territory establishment strategies in the song sparrow.
In a field study, we show that a young song sparrow (i) selects his songs from three or four older birds who have neighboring territories, (ii) preferentially learns song types that these tutor neighbors share, and (iii) ultimately sets up his territory next to, or replaces, one of these tutor neighbors. The consequence of this song learning strategy is that