Recent Birds at Rio Bosque
After a 3-month dry period, water deliveries to the park from the Roberto Bustamante Wastewater Treatment Plant resumed on 27 April. Our main focus right now is on establishing a flow the full length of the old river channel, with any additional water going to the wetland cells.
Summer resident birds continue to arrive. The first Swainson's Hawks and a Western Kingbird appeared 7 April; the first Black-chinned Hummingbird, 14 April; the first Yellow-breasted Chats, 17 April; the first Lesser Nighthawk, 18 April; the first Bell's Vireo, 21 April.
Our pair of White-tailed Kites, first seen 25 May 2024, has now been present for over 11 months. Both the kites and a pair of Cooper's Hawks are now nesting!
Burrowing Owl activity has been slow, but owls have been seen in recent weeks at 4 different burrow sites.
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 |
| Black-necked Stilt | 29 Apr | 1 |
| Green Heron | 29 Apr | 1 |
| White-tailed Kite | 29 Apr | 1 |
| Cooper's Hawk | 29 Apr | 1 |
| Lesser Nighthawk | 29 Apr | 1 |
| Burrowing Owl | 29 Apr | 2 |
| Monk Parakeet | 29 Apr | 3 |
| Black-tailed Gnatcatcher | 28 Apr | 1 |
| Green-tailed Towhee | 28 Apr | 3 |
| MacGillivray's Warbler | 28 Apr | 1 |
| Bell's Vireo | 26 Apr | 1 |
| Yellow-breasted Chat | 26 Apr | 1 |
| Blue-gray Gnatcatcher | 25 Apr | 1-2 |
| Hermit Thrush | 25 Apr | 1 |
| Northern Cardinal | 25 Apr | 1 |
| Black-throated Sparrow | 24 Apr | 1 |
| Loggerhead Shrike | 22 Apr | 1 |
| Swainson's Hawk | 21 Apr | 1 |
| Crissal Thrasher | 21 Apr | 1 |
| N. Rough-winged Swallow | 18 Apr | 3 |
| Long-billed Curlew | 17 Apr | 1 |
| White-faced Ibis | 6 Apr | 35 |
| American Barn Owl | 6 Apr | 1 |
| Sharp-shinned Hawk | 6 Apr | 1 |
| Great Horned Owl | 3 Apr | 1 |
| Vesper Sparrow | 31 Mar | 1 |
