1855.] 307 



CATHARTES. 



I. C. aura. Common during the summer months, especially along the Rio 

 Grande; among the mountains fewer. In winter rarely seen. Most abundant 

 in the spring and fall. 



BUTEO. 



2- B. borealis. Breeds rather abundantly; common everywhere. Numerous 

 specimens obtained. 



3. B. Pennsylvanictjs. Rarely met with. One near Fort Fillmore shot in Sep- 

 tember. 



4. B. lagopts. Not rare. Several specimens obtained. Feed much upon mal- 

 lards and other ducks. Observed only once on the Rio Mimbres ; not unfrequently 

 shot while duck hunting along the Del Norte. 



HALI^TUS. 



5. H. leucocephalus. But t wo or three pair seen at Forts Fillmore and Thorn, 

 during the winter only. One young male in brown plumage obtained at Fort 

 Webster ; the only one seen there. 



PANDION. 



6. P. hali,etus. Two or three seen at each station ; one shot. Apparently not 

 numerous. The maddiness of the Rio Grande, and the small size of the few 

 clear streams found in the country, will probably account for it ; in the first case 

 their prey bein^ not readily seen from above ; in the second, the few fish found 

 being very small. 



FALCO. 



7. F. columbarius. Occasionally seen only ; numerous nowhere. One obtained 

 at Fort Webster. 



8. F. sparverius. Common everywhere. Resident. 



ASTUR. 



9. A. Cooperi. One shot near Fort Webster; no other observed. 



10. A. fuscus. Common among the mountains; very rarely seen elsewhere. 

 Several obtained. 



CIRCUS. 



II. C. cyaneus. Extremely common everywhere. Prey much upon the par- 

 tridges (L. Gambelli) and also ducks. 



SURNIA. 



12. S. hypogcea. A few observed upon portions of the Jornada del Muerto. 



OTUS. 



13. O. vulgaris. Quite common in the fall along the Del Norte. Observed 

 among the mountains but twice. 



BUBO. 



14. B. Virginianus. Common in both localities. One shot very nearly white. 



CHORDEILES. 



15 C. Virginianus. Very common everywhere from April to July ; makes its 

 first appearance in the latter part of March. 



CAPRIMULGUS. 



16. C. Nuttallii. Found both along the Rio Grande and Mimbres; much more 

 common at the latter place. Arrives and migrates in the latter part of October. 



