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Functions of different song types and song structures in songbirds
Pišvejcová, Iveta ; Petrusková, Tereza (advisor) ; Linhart, Otomar (referee)
In this review I summarize information about different types of song and its structures in which has been well documented their context of use. I have tried to find out, if there are some generally valid rules. The work is aimed at Passerines (Passeriformes) males living in the temperate zone. They sing the most intensively after their arrival on breeding grounds in early spring. Depending on a species and moreover an individual, the song might differ in structure, time and frequency parameters. Some species use complex songs, and change the way of its production according to attending audience. In such cases, the length and versatility of the song (the number and variability of syllables) may reflect the quality of a male. On the other hand some species with a simple song use different criteria to assess the singer quality. The individuals then differ in the way of song production or just in use of particular structures. For example, wide frequency range and length are considered to be energy-demanding for production, and so it could be a suitable indicator for a male quality. Short syllables produced at a faster rate can be not only production-demanding but can also indicate aggression. In general, we can estimate the function of a produced song according to "mating status" (before and after pairing) and...
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Functions of different song types and song structures in songbirds
Pišvejcová, Iveta ; Petrusková, Tereza (advisor) ; Linhart, Otomar (referee)
In this review I summarize information about different types of song and its structures in which has been well documented their context of use. I have tried to find out, if there are some generally valid rules. The work is aimed at Passerines (Passeriformes) males living in the temperate zone. They sing the most intensively after their arrival on breeding grounds in early spring. Depending on a species and moreover an individual, the song might differ in structure, time and frequency parameters. Some species use complex songs, and change the way of its production according to attending audience. In such cases, the length and versatility of the song (the number and variability of syllables) may reflect the quality of a male. On the other hand some species with a simple song use different criteria to assess the singer quality. The individuals then differ in the way of song production or just in use of particular structures. For example, wide frequency range and length are considered to be energy-demanding for production, and so it could be a suitable indicator for a male quality. Short syllables produced at a faster rate can be not only production-demanding but can also indicate aggression. In general, we can estimate the function of a produced song according to "mating status" (before and after pairing) and...
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