ML617368668
Contribuidor
Data
Local
- Idade e sexo
- Macho Adulto - 1
- Comportamentos
- Corte, display ou cópula
- Sons
- Vocalização
- Playback
- Não especificado
Detalhes da observação
The bird in the audio selections was also visually identified. The first audio (three song sequences respectively) is an example of the bird using three song variants beginning with the first song consisting of 5 phrases (sections, no repetition of phrases) two of which are 2 element phrases with the remaining three made up using 1 element. The second song sequence is truncated with only 4 phrases altering the beginning phrase structure using 2 different components an ending with the down slur element. The last song sequence again alters the first, 2 element phrase and again ends with the down slur. In brief, the bird is altering the the beginning and ending of the songs with the inner phrases unchanging. To paraphrase Shy (Shy, 1985) It seems that Summer Tanagers in most cases when singing phrases with more than one element; the particular way they combine elements can be individually unique to that bird. SUTA have been documented to share common elements with a maximum of up to ± 20 elements per individual. The second audio is of the same bird (same multi-element phrase structure and using same elements for remaining phrases) altering the first phrase of the songs. Again, to paraphrase Shy (Shy, 1985). How grouping of figures (elements) into phrases (which Shy refers to as superfigures) is unique with Summer Tanagers. Regarding Scarlet Tanagers..."Although the structure of songs differs between scarlet and summer tanagers (scarlet tanagers have no subfigures, and their song duration is less variable, usually 1.5-4.0 sec)..." SHY, E. (1985). SONGS OF SUMMER TANAGERS (PIRANGA RUBRA): STRUCTURE AND GEOGRAPHICAL VARIATION. AMERICAN MIDLAND NATURALIST 114:P. 121. Addendum: Since the posting I have followed up by reviewing 136 sonograms of SCTA songs from the xeno-canto database (a few were too faint to read and discarded). Of the 136 songs, I found 132 songs to be formed by all 1 element phrases; 4 and 5 phrases (sections) per song being the most common. I found 4 songs, to contain one, 2 element phrases in the song sequence. Only 3% of the 136 songs were using 2 element phrases.
Informação técnica
- Gravador
- Zoom F3
- Microfone
- Senn MKE 600
- Acessórios
- Tamanho original do arquivo
- 4 MB