137 Roger Tory Peterson/National Audubon Society Collection/Photo Researchers, Inc.;
138-139 Francois Gohier; 141 M. С. Т. Smith/National Audubon Society Colection/Photo Researchers, Inc.;
142-143 Bernard Stonehouse/Ardea London;
144 Paul K. Dayton;
145 Jon Brook/Ecology Pictures;
146-147 top row left Kjell B. Sandved/National Audubon Society Picture Collection/Photo Researchers, Inc., top row center Douglas Allan/Ecology Pictures, top row right G. Carleton Ray, bottom row left, center Douglas Allan/ Ecology Pictures, bottom row right G. Carleton Ray;
146 bottom Douglas Allan;
148-149 Paul K. Dayton:
150 Hans D. Dossenbach;
152 Stephen J. Krasemann/DRK Photo;
154 M. A. Chappell;
155 Stephen J. Krasemann/DRK Photo;
156-157 J. Hawkings;
159 top, bottom Fran?ois Gohier, center Kenneth W. Fink/Ardea London; 159 right,
160-162, 162 top Francisco Erize; 162 bottom R. J. Tulloch/Bruce Coleman, Ltd.;
163 Rene Volot/Jacana;
164-165 Fran9ois Gohier;
166 G. Carleton Ray;
168-169 Farrell Grehan/National Audubon Society Collection/Photo Researchers, Inc.;
170 top, bottom Fred Bruemmer;
170 center, 172-173 G. Carleton Ray;
174-175 Fred Bruemmer;
176 John J. Burns;
178-179 top Francisco Erize;
178 bottom G. Carleton Ray;
180-181 Francisco Erize;
183 William Curtsinger/National Audubon Society Collection/Photo Researchers, Inc.;
184-185 top row left Sven-Olaf Lindblad/National Audubon Society Collection/Photo Researchers, Inc., top row center Robert W. Hernandez/National Audubon Society Collection/Photo Researchers, Inc., top row right Jen and Des Barlett/Bruce Coleman, Inc., bottom row left William Curtsinger/National Audubon Society Collection/Photo Researchers, Inc., center, Robert W. Hernandez/National Audubon Society Collection/Photo Researchers, Inc., bottom row right R. Zanatta/Bruce Coleman, Inc.;
184 bottom Robert W. Hernandez/National Audubon Society/Photo Researchers, Inc.;
186-191 G. Carleton Ray;
194 top William Curtsinger/National Audubon Society Collection/Photo Researchers, Inc., bottom G. Carleton Ray; 193 Gordon A. Robilliard;
196-197 top Fred Bruemmer;
196 bottom Russ Kinne/National Audubon Society Collection/Photo Researchers, Inc.;
198 David O. Laval lee;
200 top Fred Bruemmer, bottom Russ Kinne/National Audubon Society Collection/Photo Researchers, Inc.;
201 Bruce Krogman/National Marine Fishery Service;
204 Karen B. Reeves;
202 Fred Baldwin/ National Audubon Society Collection/Photo Researchers, Inc.;