data_grouse: Data for black grouse from Italy, 1997-2016

In IPMbook: Functions and Data for the Book 'Integrated Population Models'

Data for black grouse from Italy, 1997-2016

Description

Data for black grouse (Lyrurus tetrix) from Alpe Devero in the Piemont region of the Alps in Northern Italy from 1997 to 2016.

The number of displaying cocks was recorded each spring. In late summer, grouse were looked for with the help of pointer dogs and counted. Some grouse were equipped with a radio transmitter and the status of these birds (alive, dead) was regularly recorded.

Usage

data(grouse)

Format

grouse is a list with 10 components:

ch

matrix of capture histories for 96 radio-tagged birds x 128 months: 1 if found alive, 0 if found dead, otherwise NA.

age

the actual age of each bird: 1 = juvenile, 2 = adult.

sex

the sex of each bird: 1 = female, 2 = male.

season

the season of the survey: 1 = spring, 2 = summer, 3 = autumn, 4 = winter.

count.sp

annual count of displaying males at leks in spring.

count.lsM

annual count of flushed adult males in late summer.

count.lsF

annual count of flushed adult females in late summer.

count.lsC

annual count of flushed chicks in late summer.

v

annual total number of chicks in families where chicks could be sexed.

u

annual number of female chicks in families where chicks could be sexed.

Source

Luca Rotelli, Radames Bionda

References

Rotelli, L., Zbinden, N., Bionda, R., Schaub, M. (in prep.) Chick survival and hunting are important drivers for the dynamics of two Alpine black grouse (Lylurus tetrix) populations. Wildlife Biology.

Schaub, M., Kéry, M. (2022) Integrated Population Models, Academic Press, chapter 15.

Examples

data(grouse)
str(grouse)

IPMbook documentation built on Aug. 22, 2023, 1:07 a.m.