| Title | Date | Type | Setname | ||
|---|---|---|---|---|---|
| 326 |
 |
Blue-winged Teal 2 | Sound | uu_wss | |
| 327 |
 |
Blue-winged Teal 3 | Sound | uu_wss | |
| 328 |
|
Blue-winged Warbler 1 | 2006-06-03 | Sound | uu_wss |
| 329 |
 |
Bluethroat | Sound | uu_wss | |
| 330 |
 |
Bobolink | Sound | uu_wss | |
| 331 |
 |
Bohemian Waxwing | Sound | uu_wss | |
| 332 |
|
Bolsa Chica Ecological Reserve-- Egrets, Gulls, Heron and Cormorants-- at spillway 110204 | 2011-02-04 | Sound | uu_wss |
| 333 |
 |
Bonaparte's Gull | Sound | uu_wss | |
| 334 |
 |
Bonaparte's gulls in western Washington (100127) | 2010-01-27 | Sound | uu_wss |
| 335 |
|
Boreal Chickadee 1 | 2006-06-13 | Sound | uu_wss |
| 336 |
 |
Boreal Owl 1 | 2007-04-13 | Sound | uu_wss |
| 337 |
|
Boreal Owl 2 | 2007-04-13 | Sound | uu_wss |
| 338 |
|
Boreal Owl 3 | 2007-10-05 | Sound | uu_wss |
| 339 |
|
Boreal Owl 4 | 2007-04-27 | Sound | uu_wss |
| 340 |
|
Boreal Owl 5 | 2007-04-27 | Sound | uu_wss |
| 341 |
|
Boreal Owl 6 | 2009-03-20 | Sound | uu_wss |
| 342 |
|
Boreal Owl in Washington state | Sound | uu_wss | |
| 343 |
|
Botteri's Sparrow | Sound | uu_wss | |
| 344 |
 |
Brant 1 | Sound | uu_wss | |
| 345 |
|
Brant 2 | Sound | uu_wss | |
| 346 |
 |
Brant 3 | 2003-03-26 | Sound | uu_wss |
| 347 |
 |
Brewer's Blackbird | Sound | uu_wss | |
| 348 |
 |
Brewer's Sparrow | Sound | uu_wss | |
| 349 |
|
Bridled Titmouse call | Sound | uu_wss | |
| 350 |
 |
Bristle-thighed Curlew | Sound | uu_wss |