birds

catbird

catbird.bin

woodthrush

woodthrush.bin


  Data frames for 2 species from the breeding bird survey (BBS).  Each
  data frame has a row for each site and columns for each sampling
  event.  There is a point count and occurrence--designated by
  <code>.bin</code>--  version for each species.


datasets

Fits hierarchical models of animal abundance and occurrence to data collected using survey methods such as point counts, site occupancy sampling, distance sampling, removal sampling, and double observer sampling. Parameters governing the state and observation processes can be modeled as functions of covariates.

Andy Royle

unmarked

Models for Data from Unmarked Animals

birds function

<dl>
    <dt><code>catbird</code></dt><dd>A data frame of point count observations for
      the catbird.</dd> <dt><code>catbird.bin</code></dt><dd>A data frame of occurrence observations for
      the catbird.</dd> <dt><code>woodthrush</code></dt><dd>A data frame of point count observations for
      the wood thrush.</dd> <dt><code>woodthrush.bin</code></dt><dd>A data frame of point count observations for
      the wood thrush.</dd> </dl> 

Format

Royle J. N-mixture models for estimating population size from spatially
replicated counts. Biometrics. 2004.  60(1):108--115.

birds: BBS Point Count and Occurrence Data from 2 Bird Species

Description

Usage

Arguments

Format

Source

Examples