| Title | Date | Setname | Type | ||
|---|---|---|---|---|---|
| 251 |
 |
Cassin's Kingbird | uu_wss | Sound | |
| 252 |
 |
Cattle Egret | uu_wss | Sound | |
| 253 |
|
Cheat grass burn | 1998 | uu_wss | Sound |
| 254 |
|
Chestnut-collared Longspur | uu_wss | Sound | |
| 255 |
|
Chihuahuan Raven | uu_wss | Sound | |
| 256 |
 |
Chipping Sparrow | uu_wss | Sound | |
| 257 |
|
Christmas Meadows - Uinta Mountains | 2007-08-24 | uu_wss | Sound |
| 258 |
 |
Chukar | uu_wss | Sound | |
| 259 |
 |
Cicada (070517-52) | 2007-05-17 | uu_wss | Sound |
| 260 |
|
Clear Lake 2UT (0702-291) | uu_wss | Sound | |
| 261 |
|
Colima Warbler | uu_wss | Sound | |
| 262 |
|
Common Black-Hawk | uu_wss | Sound | |
| 263 |
 |
Common Goldeneye | uu_wss | Sound | |
| 264 |
 |
Common Loon yodel | uu_wss | Sound | |
| 265 |
 |
Common Moorhen | uu_wss | Sound | |
| 266 |
|
Common Pauraque | uu_wss | Sound | |
| 267 |
|
Common Poorwill | uu_wss | Sound | |
| 268 |
 |
Common Raven | uu_wss | Sound | |
| 269 |
|
Cordilleran Flycatcher | uu_wss | Sound | |
| 270 |
|
Couch's Kingbird | uu_wss | Sound | |
| 271 |
 |
Coyotes 1 | uu_wss | Sound | |
| 272 |
|
Coyotes 2 | uu_wss | Sound | |
| 273 |
|
Cricket at Hog Springs | 2004-06 | uu_wss | Sound |
| 274 |
 |
Dark-eyed Junco | uu_wss | Sound | |
| 275 |
|
Duck hunting | 2005-10-07 | uu_wss | Sound |