willowtits: willowtits

In jfieberg/Data4Ecologists: Data Assoicated with Statistics for Ecologists

willowtits

Description

Ddetection/non-detection and count data of willow tits (Poecile montanus) during the Swiss Survey of Common Breeding Birds.

Usage

willowtits

Format

A data frame with 237 rows and 16 variables:

c.1

integer count of willow tits on the first of three survey occassions

c.2

integer count of willow tits on the second of three survey occassions

c.3

integer count of willow tits on the third of three survey occassions

day.1

integer Julian date of the first survey occassion

day.2

integer Julian date of the second survey occassion

day.3

integer Julian date of the third survey occassion

dur.1

integer duration of the first survey occassion (min)

dur.2

integer duration of the second survey occassion (min)

dur.3

integer duration of the third survey occassion (min)

elev

integer elevation (m)

forest

integer percent forest cover

length

double transect length (km)

y

double indicator variable equal to 1 if at least 1 willow tit was observed in one of the three surveys and 0 otherwise

y.1

integer indicator variable equal to 1 if at least 1 willow tit was observed in the first of three surveys and 0 otherwise

y.2

integer indicator variable equal to 1 if at least 1 willow tit was observed in seconed of three surveys and 0 otherwise

y.3

integer indicator variable equal to 1 if at least 1 willow tit was observed in third of three surveys and 0 otherwise

jfieberg/Data4Ecologists documentation built on April 17, 2025, 3:12 p.m.