Date: 4/9/26 12:33 pm
From: Tom Benson via groups.io <thomasabenson...>
Subject: [inlandcountybirds] California Bird Atlas - San Bernardino and Riverside County update
Hi inland county birders, The California Bird Atlas monthly summary for March has been posted on the eBird portal at: https://ebird.org/atlascalifornia/news/atlas-dispatch-march-2026 The next Town Hall Q & A session on Zoom will be on April 16 at 7 pm and will include project updates, take questions, and feature Megan Jankowski (CBA Review Coordinator) presenting on how to find breeding birds. Register for the Zoom here. Submit questions here.
Breeding season is already underway in some parts of San Bernardino and Riverside counties, but peak breeding activity will occur here over the next few months, and we need all the help we can get! If you haven’t joined the eBird Atlas project yet, you can do so here.
Some CBA stats for San Bernardino County as of April 9, 2026:
Number of Atlasers = 168Hours of Atlas effort = 1080eBird checklists = 1225Blocks with data = 259 (13% of the county total)Number of species with breeding confirmed: 78 Here are the species with breeding confirmed in at least 5 blocks: # Blocks25  Common Raven13  House Finch12  Bushtit9    European Starling7    Red-tailed Hawk, House Sparrow6    Black Phoebe, Lesser Goldfinch5    Cassin's Kingbird, House Sparrow
Here are the atlas blocks with the most confirmed species:
# Species confirmed19  San Bernardino North CW12  Guasti CW12  Redlands CE11  Morongo Valley CW9    Prado Dam NE

Some CBA stats for Riverside County as of April 9, 2026:
Number of Atlasers = 262Hours of Atlas effort = 801eBird checklists = 1316Blocks with data = 211 (29% of the county total)Number of species with breeding confirmed: 64 Here are the species with breeding confirmed in at least 5 blocks: # Blocks14  Anna's Hummingbird, Bushtit13  House Finch12  Common Raven10  Verdin9    Red-tailed Hawk8    Costa's Hummingbird7    Cliff Swallow, European Starling, House Sparrow, Lesser Goldfinch, Black-throated Sparrow, California Towhee6    American Crow5    Allen's Hummingbird, Great Blue Heron, Great Horned Owl, Northern Mockingbird
Here are the atlas blocks with the most confirmed species:
# Species confirmed31  Riverside East NW22  Riverside East NE
11  Riverside East CE
11  Riverside East CW
8    El Casco SW8    La Quinta SW

Tom BensonCBA Regional Coordinator for San Bernardino and Riverside counties


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