Version 95.1 - 17 July 1995


General Information

Introduction About the BBS Help Index Observer News

Summary of Survey Results

Analysis and Interpretation:

Species Accounts The Big Picture: Are Birds Declining?

Trends, Maps, and Indices:

Population Trends-Estimates of Bird Population Change Over Time

Annual Indices-Graphs of Bird Population Change Over Time

Abundance Maps-Spatial Patterns of Bird Abundance

Trend Maps-Spatial Patterns of Bird Population Change


Tools for Learning about Birds

Play the Patuxent Bird Quiz!

Pictures of Common North American Birds

Songs of Common North American Birds


Viewer Response Line: Tell us What you Think!


Links to Additional NBS Information Sources

About the NBS NBS Home Page I&M Home Page MBR Home Page