A Quantitative Study of the Nocturnal Migration of Birds [Illustrated]

This edition features
• illustrations
• a linked Table of Contents

CONTENTS
Introduction
Acknowledgments
Part I. Flight Densities and Their Determination
Lunar Observations of Birds and the Flight Density Concept
Observational Procedure and the Processing of Data
Part II. The Nature of Nocturnal Migration
Horizontal Distribution of Birds on Narrow Fronts
Density as a Function of the Hour of the Night
Migration in Relation to Topography
Geographical Factors and the Continental Density Pattern
Migration and Meteorological Conditions
Conclusions
Literature Cited