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  • 1
    Online Resource
    Online Resource
    Behavioral Consistency in a Changed Social Context in Carolina Chickadees
    Informa UK Limited ; 2007
    In:  The Journal of General Psychology Vol. 134, No. 2 ( 2007-04), p. 229-245
    Details
    In: The Journal of General Psychology, Informa UK Limited, Vol. 134, No. 2 ( 2007-04), p. 229-245
    Type of Medium: Online Resource
    ISSN: 0022-1309 , 1940-0888
    URL: Article
    DOI: 10.3200/GENP.134.2.229-246
    Language: English
    Publisher: Informa UK Limited
    Publication Date: 2007
    detail.hit.zdb_id: 2066585-4
    SSG: 5,2
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  • 2
    Online Resource
    Online Resource
    Communicative cultures in cetaceans: Big questions are unanswered, functional analyses are needed
    Cambridge University Press (CUP) ; 2001
    In:  Behavioral and Brain Sciences Vol. 24, No. 2 ( 2001-04), p. 334-334
    Details
    In: Behavioral and Brain Sciences, Cambridge University Press (CUP), Vol. 24, No. 2 ( 2001-04), p. 334-334
    Abstract: Demonstrating cetacean communicative cultures requires documenting vocal differences among conspecific groups that are socially learned and stable across generations. Evidence to date does not provide strong scientific support for culture in cetacean vocal systems. Further, functional analyses with playbacks are needed to determine whether observed group differences in vocalizations are meaningful to the animals themselves.
    Type of Medium: Online Resource
    ISSN: 0140-525X , 1469-1825
    URL: Article
    DOI: 10.1017/S0140525X01333964
    Language: English
    Publisher: Cambridge University Press (CUP)
    Publication Date: 2001
    detail.hit.zdb_id: 1481789-5
    detail.hit.zdb_id: 423721-3
    SSG: 7,11
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  • 3
    Online Resource
    Online Resource
    Variation in chick-a-dee calls of tufted titmice, Baeolophus bicolor : Note type and individual distinctiveness
    Acoustical Society of America (ASA) ; 2007
    In:  The Journal of the Acoustical Society of America Vol. 122, No. 2 ( 2007-08-01), p. 1216-1226
    Details
    In: The Journal of the Acoustical Society of America, Acoustical Society of America (ASA), Vol. 122, No. 2 ( 2007-08-01), p. 1216-1226
    Abstract: The chick-a-dee call of chickadee species (genus Poecile) has been the focus of much research. A great deal is known about the structural complexity and the meaning of variation in notes making up calls in these species. However, little is known about the likely homologous “chick-a-dee” call of the closely related tufted titmouse, Baeolophus bicolor. Tufted titmice are a prime candidate for comparative analyses of the call, because their vocal and social systems share many characteristics with those of chickadees. To address the paucity of data on the structure of chick-a-dee calls of tufted titmice, we recorded birds in field and aviary settings. Four main note types were identified in the call: Z, A, Dh, and D notes. Several acoustic parameters of each note type were measured, and statistical analyses revealed that the note types are acoustically distinct from one another. Furthermore, note types vary in the extent of individual distinctiveness reflected in their acoustic parameters. This first step towards understanding the chick-a-dee call of tufted titmice indicates that the call is comparable in structure and complexity to the calls of chickadees.
    Type of Medium: Online Resource
    ISSN: 0001-4966 , 1520-8524
    URL: Article
    DOI: 10.1121/1.2749459
    RVK:
    EQ 1000
    Language: English
    Publisher: Acoustical Society of America (ASA)
    Publication Date: 2007
    detail.hit.zdb_id: 1461063-2
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  • 4
    Online Resource
    Online Resource
    Social Complexity Can Drive Vocal Complexity : Group Size Influences Vocal Information in Carolina Chickadees
    SAGE Publications ; 2006
    In:  Psychological Science Vol. 17, No. 7 ( 2006-07), p. 557-561
    Details
    In: Psychological Science, SAGE Publications, Vol. 17, No. 7 ( 2006-07), p. 557-561
    Abstract: One hypothesis to explain variation in vocal communication in animal species is that the complexity of the social group influences the group's vocal complexity. This social-complexity hypothesis for communication is also central to recent arguments regarding the origins of human language, but experimental tests of the hypothesis are lacking. This study investigated whether group size, a fundamental component of social complexity, influences the complexity of a call functioning in the social organization of Carolina chickadees, Poecile carolinensis. In unmanipulated field settings, calls of individuals in larger groups had greater complexity (more information) than calls of individuals in smaller groups. In aviary settings manipulating group size, individuals in larger groups used calls with greater complexity than individuals in smaller groups. These results indicate that social complexity can influence communicative complexity in this species.
    Type of Medium: Online Resource
    ISSN: 0956-7976 , 1467-9280
    URL: Article
    DOI: 10.1111/j.1467-9280.2006.01743.x
    Language: English
    Publisher: SAGE Publications
    Publication Date: 2006
    detail.hit.zdb_id: 2022256-7
    SSG: 5,2
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  • 5
    Online Resource
    Online Resource
    Variation in chick-a-dee calls of a Carolina chickadee population, Poecile carolinensis : Identity and redundancy within note types
    Acoustical Society of America (ASA) ; 2003
    In:  The Journal of the Acoustical Society of America Vol. 113, No. 4 ( 2003-04-01), p. 2127-2136
    Details
    In: The Journal of the Acoustical Society of America, Acoustical Society of America (ASA), Vol. 113, No. 4 ( 2003-04-01), p. 2127-2136
    Abstract: Chick-a-dee calls of chickadee species are structurally complex because calls possess a rudimentary syntax governing the ordering of their different note types. Chick-a-dee calls were recorded in an aviary from female and male birds from two field sites. This paper reports sources of variation of acoustical parameters of notes in these calls. There were significant sex and microgeographic differences in some of the measured parameters of the notes in the calls. In addition, the syntax of the call itself influenced characteristics of each of the notes. For example, calls with many introductory notes began with a note of higher frequency and longer duration, relative to calls with few introductory notes. Furthermore, the number of introductory notes influenced frequency and duration components of notes later in the call. Thus, single notes are predictive of the note composition of the signaler’s call. This suggests that a receiver might gain the meaning in the call even if it hears only part of the call. Further, single notes within these complex calls can contain information enabling receivers to predict the sex of the signaler, and whether it is from the local population.
    Type of Medium: Online Resource
    ISSN: 0001-4966 , 1520-8524
    URL: Article
    DOI: 10.1121/1.1559175
    RVK:
    EQ 1000
    Language: English
    Publisher: Acoustical Society of America (ASA)
    Publication Date: 2003
    detail.hit.zdb_id: 1461063-2
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