179 



CATALOGUE OF THE BIRDS KNOWN TO OCCUR IN COLORADO; DIS- 

 TINGUISHING (WITH AN ASTERISK) THOSE WHICH HAVE BEEN 

 ASCERTAINED TO BREED WITHIN THE LIMITS OF THE TER- 

 RITORY, AND APPROXIMATELY INDICATING THEIR RANGE 

 DURING THE BREEDING SEASON. 



No birds are included in the following list which are not positively 

 known to occur within the limits of Colorado, nor are any of those 

 marked as breeding in the Territory so distinguished without as good 

 reason. Many species not found by Messrs. Aiken and Allen have 

 been obtained by one or more of the several Government expeditions, 

 chiefly those in charge of Dr. F. V. Hayden, which have from time to 

 time made portions of Colorado their field of exploration. 





No. , Species. 



*1. Turdus fuscescens STEPHENS. 

 *2. Turdus Swainsoni CABANIS. 



*3. Turdus Pallasii CAB AN., 

 var. AUDUBONI Baird. 



*4. Turdus migratorius L. 



*5. Galeoscoptes Carolinensis (L.). 



*6. Oreoscoptes montanus (TOWNS.). 



*7. Harporhynchus rufus (L.), 

 var. LONGICAUDA Baird. 



*8. Mimus polyglottus, 

 var. CAUDATUS Baird. 



*9. Cinclus Mexicanus SWAINS. 



10. Sialia sialis (L.). 



*ll. Sialia Mexicana SWAINS. 



*12. Sialia arctica SWAINS. 



*13. Regulus calendula (L.). 



14. Regulus satrap a LIGHT. 



15. Polioptila cserulea (L.). 



*16. Lophophanes inornatus (GAMB.). 

 *17. Parus montanus GAMB. 



*18. Parus atricapillus L., 



var. SEPTENTIUONALIS Harris. 



Centre of abundance during breeding season. 



Along the lower streams. 



" " mountain " 

 Pine region. 



All wooded portions. 

 Along streams. 

 Artemisia plains. 

 Foot-Sills. 



Mt. streams and torrents. 



Foot-hills. 



Bare portions of moun- 

 tains, near tree-limit; 

 occasionally breeds 

 lower down. 



Pine region. 



Foot-hills ? 

 Pine region. 



Streams of lower por- 

 tions. 



