| FrenchPeregrines {AHMbook} | R Documentation |
Data for observations of peregrines from the French Jura mountains
Description
The data are detection/nondetection data of the Peregrine Falcon (Falco peregrinus) from the wild and wonderful French Jura between 1964 and 2016 for 284 cliff sites (= territories, or sites in the context of a site-occupancy model) where a pair had been detected at least once in this period. A large proportion of sites are visited multiple times per year, but unfortunately only the aggregate results are available in each year, i.e., whether a pair was detected at least once, or never.
Usage
data("FrenchPeregrines")Format
FrenchPeregrines is a data frame with 284 rows and 56 columns:
- site
cliff (or site) identifier.
- department
factor, the administrative area (Ain, Jura or Doubs).
- height
factor, height of the cliff, low, medium, or tall.
- yr1964 to yr2016
detection histories for each year: 1 if a pair of peregrines was detected during at least one survey, 0 if no pair was detected, NA if no survey was carried out in that year.
Source
Groupe Pèlerin Jura (René-Jean Monneret, René Ruffinoni, and colleagues)
References
Kéry, M. & Royle, J.A. (2021) Applied Hierarchical Modeling in Ecology AHM2 - 4.11.
Examples
data(FrenchPeregrines)
str(FrenchPeregrines)
# Extract the capture history data:
ch <- as.matrix(FrenchPeregrines[, 4:56])
dim(ch)
range(ch, na.rm=TRUE)