CCformants {IDmeasurer}

Corncrake, Crex crex - formants

Description

• Species: Corncrake, Crex crex

• Number of individuals: 33

• Number of calls per individual: 10

• Number of acoustic variables: 4

• Individual identity: HS=10.51

• Reference: Budka, M., & Osiejuk, T. S. (2013). Formant Frequencies are Acoustic Cues to Caller Discrimination and are a Weak Indicator of the Body Size of Corncrake Males. Ethology, 119, 960-969. doi:10.1111/eth.12141

Corncrake calls were recorded at three sites in Poland and one in the Czech Republic Recordings were made during the corncrake breeding season, from 8 to 30 July, in 2011 and in 2012. Males were recorded when calling spontaneously, in favourable conditions, at night (from 22.00 to 03.30, local time) from a distance of ca. 5-10 m. The original dataset comprised 104 males with 10 calls measured from each male.

Formants (second to fifth) were measured within the first syllable of the call. Formants were extracted by PRAAT.

Usage

CCformants

Format

A data frame with 330 rows and 5 variables:

id

factor, identity code of an individual emitting the call

s1f2, s1f3, s1f4, s1f5

formants 2 to 5, respectively, measured within the first syllable of the call, in Hertz

Source

Budka, M., & Osiejuk, T. S. (2013). Formant Frequencies are Acoustic Cues to Caller Discrimination and are a Weak Indicator of the Body Size of Corncrake Males. Ethology, 119, 960-969. doi:10.1111/eth.12141