crossbill {unmarked} | R Documentation

## Detection/non-detection data on the European crossbill (Loxia curvirostra)

### Description

267 1-kmsq quadrats were surveyed 3 times per year during 1999-2007.

### Usage

    data(crossbill)

### Format

A data frame with 267 observations on the following 58 variables.

`id`

  Plot ID

`ele`

  Elevation

`forest`

  Percent forest cover

`surveys`

  a numeric vector

`det991`

  Detection data for 1999, survey 1

`det992`

  Detection data for 1999, survey 2

`det993`

  Detection data for 1999, survey 3

`det001`

  Detection data for 2000, survey 1

`det002`

  a numeric vector

`det003`

  a numeric vector

`det011`

  a numeric vector

`det012`

  a numeric vector

`det013`

  a numeric vector

`det021`

  a numeric vector

`det022`

  a numeric vector

`det023`

  a numeric vector

`det031`

  a numeric vector

`det032`

  a numeric vector

`det033`

  a numeric vector

`det041`

  a numeric vector

`det042`

  a numeric vector

`det043`

  a numeric vector

`det051`

  a numeric vector

`det052`

  a numeric vector

`det053`

  a numeric vector

`det061`

  a numeric vector

`det062`

  a numeric vector

`det063`

  Detection data for 2006, survey 3

`det071`

  Detection data for 2007, survey 1

`det072`

  Detection data for 2007, survey 2

`det073`

  Detection data for 2007, survey 3

`date991`

  Day of the season for 1999, survey 1

`date992`

  Day of the season for 1999, survey 2

`date993`

  Day of the season for 1999, survey 3

`date001`

  Day of the season for 2000, survey 1

`date002`

  a numeric vector

`date003`

  a numeric vector

`date011`

  a numeric vector

`date012`

  a numeric vector

`date013`

  a numeric vector

`date021`

  a numeric vector

`date022`

  a numeric vector

`date023`

  a numeric vector

`date031`

  a numeric vector

`date032`

  a numeric vector

`date033`

  a numeric vector

`date041`

  a numeric vector

`date042`

  a numeric vector

`date043`

  a numeric vector

`date051`

  a numeric vector

`date052`

  a numeric vector

`date053`

  a numeric vector

`date061`

  a numeric vector

`date062`

  a numeric vector

`date063`

  a numeric vector

`date071`

  a numeric vector

`date072`

  a numeric vector

`date073`

  Day of the season for 2007, survey 3

### Source

Schmid, H. N. Zbinden, and V. Keller. 2004. Uberwachung der Bestandsentwicklung haufiger Brutvogel in der Schweiz, Swiss Ornithological Institute Sempach Switzerland

### See Also

`Switzerland` for corresponding covariate data defined for all 1-kmsq pixels in Switzerland. Useful for making species distribution maps.

### Examples

    data(crossbill)
    str(crossbill)

[Package unmarked version 0.12-3 Index]