CONTENTS 



Page 



Acknowledgments 327 



Legal Protection 328 



Regulations for Illinois 328 



Open Season 328 



Shooting Hours 332 



Bag Limit 332 



Favoring Depleted Species 332 



Bait and Live Decoys 333 



Three-Shell Limit 333 



Evaluating Regulations 333 



Vulnerability of Species 336 



Influence of Open Season 340 



Comparative Shooting Pressure 341 



Influence of Population Density 351 



Optimum Shooting Dates 354 



Optimum Season Lengths 355 



Optimum Shooting Hours 356 



Effect of Bag Limit 359 



Laws for Depleted Species 361 



Effect of Bait and Live Decoys ; 364 



Effect of Three-Shell Law 368 



Illinois Duck Harvest 368 



Total Effect of Regulations 369 



Summary 370 



Literature Cited 372 



