x LIST OF ILLUSTRATIONS 



XXXIV. PYGMY NUTHATCH 454 



XXXV. MOUNTAIN CHICKADEE 458 



XXXVI. VARIED THKUSH . . . .474 



DIAGBAMS. 



Measurement of Bill xxviii 



Measurement of Tarsus ....... xxviii 



v 



FIGURES IN THE TEXT. 



FIGURE PAGE 



1. Western Grebe, foot .... . . . 2 



2. Loon, foot ........... 2 



3. Tufted Puffin, foot .... 2 



4. Herring Gull, foot ......... 2 



5. Parasitic Jaeger, bill ......... 2 



6. Short-billed Gull, bill .... . 2 



7. Black-footed Albatross, bill . . . . 3 



8. Giant Fulmar, bill ... ... .3 



9. Cormorant, foot .......... 3 



10. Man-o'-War Bird, bill .... . 3 



11. White-crested Cormorant, bill ....... 3 



12. White Pelican, bill 3 



13. Merganser, foot . .3 



14. White-faced Glossy Ibis, bill ....... 4 



15. Green Heron, head ......... 4 



16. Sandhill Crane, foot . . .'...... 4 



17. Florida Gallinule, foot ... . .4 



18. White -rumped Sandpiper, foot . 4 



19. Killdeer, foot ... . .... 4 



20. Western Grebe, head ...... 5 



21. Horned Grebe, head . ...... 7 



22. Least Grebe . . . .8 



23. Pied-billed Grebe .8 



24. Loon, bill ... . .9 



25. Pacific Loon, head ......... 11 



26. Tufted Puffin, bill . 11 



27. California Murre, bill ... . 11 



28. Rhinoceros Auklet, bill . . ..... 12 



29. Pigeon Guillemot, bill . . ... .12 



30. Paroquet Auklet, bill ..... .12 



31. Least Auklet, bill .... . .12 



32. Tufted Puffin, head . . 12 



33. Rhinoceros Auklet, bill . 13 



34. Paroquet Auklet, bill . 14 



35. Least Auklet, bill . ... .14 



