|Resources Information Standards Committee|
Inventory Methods for|
Colonial-Nesting Freshwater Birds:
Eared Grebe, Red-Necked Grebe, Western Grebe, American White Pelican, and Great Blue Heron
Standards for Components of British Columbia's Biodiversity No. 8
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Table of Contents
2. INVENTORY GROUP
2.1 Red-necked Grebe Podiceps grisegena
2.2 Eared Grebe Podiceps nigricollis
2.3 Western Grebe Aechmophorus occidentalis
2.4 American White Pelican Pelecanus erythrorhynchos
2.5 Great Blue Heron Ardea herodias
3.1.1 Habitat data standards
3.1.2 Common errors and biases
3.1.3 Disturbance of birds during surveys
3.1.4 Chronology of population patterns
3.1.5 Observer variability
3.1.6 Estimating numbers in large flocks
3.1.7 Survey Design Hierarchy
List of Figures
Figure 1. RIC species inventory survey design hierarchy with examples.
List of Tables
Table 1. Location and maximum counts of nesting colonies (data from Campbell et al. 1990)
Table 2. Summary of recommended methods for inventory of colonial-nesting freshwater birds in British Columbia at three levels of intensity.
Table 3. Types of inventory surveys, the data forms needed, and the level of intensity of the survey.
HTML Created: November 1998
Copyright © 1998 Province of British Columbia
Published by the Resources Inventory Committee