

CONTENTS 
ABSTRACT 
Albatrosses ee Pe ee ee ee ee ee ee ee ae 
sooty Terns * 8 @ © © © © @ © © © 8 © © © eh thl hl hl 
INTRODUCTION 6 oe “el on 6 a JS ce ee oe <0 les fe is Ze es 
ACKNOWLEDGMENTS oe 8 @ &@ & #8 @# 6 &@ #8 &® @® #® &@® ®@® # 868 &© @® @ 
PART I. ALBATROSS STUDIES 
Albatross Populations in the North Pacific Ocean 
Methods ...« ee ece ree 
Results e . e e 6 e * * e * 
Population Dynamics . . .« « « « e 
Recognition of Individuals 
Homing ee ee ww ew ew 
Unemployed Laysan Albatrosses 
Daily Rhythm in Population 
es ° e & e e ° ® 6 
e e e e ® e e 
. * e e s e e 
* e s Cy e e 6 e 
e e e * ° e e e e 
® e e e e e e 
e e e s ° e e e e 
s e e e e e e ° s e 
e ® e a s e e e e e 
* * e e « ® e e e 2 
Seasonal Fluctuations as 
Albatross Mortality o ee 
Ecological Factors Affecting Albatross Abundance 
Albatross Problem in Aircraft Operations ... 
Time of Occurrence of Albatross Strikes . 
Frequency of Albatross Strikes .... 
Weights of Albatrosses . 2. .«.-e ee. 
Damage Resulting from Albatross Strikes 
Sources of Albatrosses Over the Runways .. 
The Problem: ee @ @¢ @ 
Method _  @ «© © © @ 6 
Analysis . « « « « « 
Conclusions . . ° 
Studies of Control Methods ee 8 
small Scale Elimination Experiments 
Large Scale Elimination Experiments . 
Terrain as a Factor Affecting Albatross Abundance Over 
RunwayS . « e 
Discussion and Recommendations . . « « « « © « e « « 
Methods for Controlling Albatrosses Over Runways 
Protection af the Black-footed Albatrosses .. . 
PART Il. SOOTY TERN STUDIES 
Populations cee ee 
Control Experiments .. 
Harassment Program 
Habitat Control . 
Poisoning . « « « e ° 
Sooty Terns and Aircraft Operations 
Frequency of Sooty Tern Strikes 
Damage Resulting from Sooty Tern Strikes 
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