Recent Birds at Rio Bosque
Water deliveries to the park from the Roberto Bustamante Wastewater Treatment Plant ended 25 January. These flows are not expected to resume until June. The wetland cells continue to be dry, as is ~70% of the old river channel within the park.
The park's first spring arrival was a Black-chinned Hummingbird on 28 March, followed by Swainson's Hawk on 5 April, Bell's Vireo on 13 April, Western Kingbird on 14 April and Yellow-breasted Chat on 16 April.
The park's pair of White-tailed Kites has not been seen since 7 October 2025. A Cooper's Hawk pair currently has an active nest.
Burrowing Owls are currently using 2 sites in the northern portion of the park.
The park's wintering American Crows are gone.
Northern Cardinals continue to be seen along the old river channel within the park.
You can download the current field checklist for the park here.
You can view recent Rio Bosque bird observations posted to eBird .
| Species | Date | Number |
| White-faced Ibis | 26 Apr | 100 |
| Cooper's Hawk | 26 Apr | 2 |
| Swainson's Hawk | 26 Apr | 1 |
| Burrowing Owl | 26 Apr | 2 |
| Bell's Vireo | 26 Apr | 2 |
| Crissal Thrasher | 26 Apr | 1 |
| Yellow-breasted Chat | 26 Apr | 2 |
| Lark Sparrow | 26 Apr | 2 |
| Northern Cardinal | 26 Apr | 2 |
| Monk Parakeet | 22 Apr | 1-2 |
| Western Screech-Owl | 19 Apr | 1 |
| Black-necked Stilt | 16 Apr | 2 |
| Merlin | 16 Apr | 1 |
| N. Rough-winged Swallow | 14 Apr | 10 |
| Loggerhead Shrike | 13 Apr | 1 |
| Broad-winged Hawk | 12 Apr | 1 |
| Green Heron | 29 Mar | 1 |
| Long-eared Owl | 29 Mar | 2 |
