Contents

PAGE
Introduction[4]
Accidents to Migrating Birds in early October, 1954[6]
General[6]
Accidents at Topeka, Kansas[6]
Description of WIBW-TV tower[7]
Weather conditions[7]
Acknowledgments[7]
Notes on the Species Killed at Topeka[8]
Randomness of the Sample[17]
Number of Migrants[18]
Differential Migration of Sex- and Age-classes[20]
History of the subject[20]
Differential migration of sex- and age-classes as shown by the Topeka sample[23]
Molt in Relation to Migration[29]
General comment[29]
Molt in the Topeka sample[30]
Size Differences according to Sex and Age[31]
Linear measurements[31]
Weights[32]
Computations of Longevity and Survival[38]
Processing of Samples[38]
Summary[39]
Literature Cited[41]