Date: 9/28/25 11:05 pm
From: eBird alert via groups.io <alert.ebird...>
Subject: [slocobirding] [eBird Alert] San Luis Obispo County Rare Bird Alert
*** Species Summary:

- Red-breasted Merganser (1 report)
- Costa's Hummingbird (1 report)
- Tufted Puffin (1 report)
- Wilson's Storm-Petrel (6 reports)
- Manx Shearwater (2 reports)
- Least Bittern (3 reports)
- Little Blue Heron (9 reports)
- Grasshopper Sparrow (2 reports)
- Blackburnian Warbler (1 report)
- Chestnut-sided Warbler (4 reports)
- Rose-breasted Grosbeak (1 report)

---------------------------------------------
Thank you for subscribing to the <daily> San Luis Obispo County Rare Bird Alert. The report below shows observations of rare birds in San Luis Obispo County. View or unsubscribe to this alert at https://ebird.org/alert/summary?sid=SN36231
NOTE: all sightings are UNCONFIRMED unless indicated.

eBird encourages safe, responsible birding. Some reports may be from private property. Respect access restrictions and follow the rules wherever you bird. For more information, visit the eBird and Merlin Community Guidelines: https://ebird.org/community-guidelines. Stay connected to the global birding community with eBird Updates: https://mailchi.mp/cornell/ebird-updates-sign-up-page.

Red-breasted Merganser (Mergus serrator) (1)
- Reported Sep 27, 2025 07:10 by Robert Pitcher
- Villa Creek--Estero Bluffs State Park, San Luis Obispo, California
- Map: http://maps.google.com/?ie=UTF8&t=p&z=13&<q...>,-120.9688341&<ll...>,-120.9688341
- Checklist: https://ebird.org/checklist/S275810492

Costa's Hummingbird (Calypte costae) (1)
- Reported Sep 27, 2025 10:45 by Dale Ball
- Home, San Luis Obispo, California
- Map: http://maps.google.com/?ie=UTF8&t=p&z=13&<q...>,-120.6737125&<ll...>,-120.6737125
- Checklist: https://ebird.org/checklist/S276013067
- Media: 2 Photos
- Comments: "Continuing bird."

Tufted Puffin (Fratercula cirrhata) (1)
- Reported Sep 27, 2025 09:58 by Alexander Yan
- North Pacific Ocean US (35.2023,-121.1367), San Luis Obispo, California
- Map: http://maps.google.com/?ie=UTF8&t=p&z=13&<q...>,-121.136656&<ll...>,-121.136656
- Checklist: https://ebird.org/checklist/S275926025
- Comments: "All black alcid with a massive bill flying by the bow when the rest of the crowd were more concentrated on the sides with tube noses. Had no white underbelly as in horned."

Wilson's Storm-Petrel (Oceanites oceanicus) (1) CONFIRMED
- Reported Sep 27, 2025 09:58 by Kevin Zimmer
- North Pacific Ocean US (35.2023,-121.1367), San Luis Obispo, California
- Map: http://maps.google.com/?ie=UTF8&t=p&z=13&<q...>,-121.136656&<ll...>,-121.136656
- Checklist: https://ebird.org/checklist/S275927186
- Media: 8 Photos
- Comments: "Small dark white-rumped storm-petrel with short squarish (not forked) tail. White on rumped wrapped around to undertail coverts and feet extended past tail in flight. Lacked forked tail of Leach’s SP. Photos by some."

Wilson's Storm-Petrel (Oceanites oceanicus) (1) CONFIRMED
- Reported Sep 27, 2025 09:58 by Petra Clayton
- North Pacific Ocean US (35.2023,-121.1367), San Luis Obispo, California
- Map: http://maps.google.com/?ie=UTF8&t=p&z=13&<q...>,-121.136656&<ll...>,-121.136656
- Checklist: https://ebird.org/checklist/S275927092
- Media: 8 Photos
- Comments: "Small dark white-rumped storm-petrel with short squarish (not forked) tail. White on rumped wrapped around to undertail coverts and feet extended past tail in flight. Lacked forked tail of Leach’s SP. Photos by some."

Wilson's Storm-Petrel (Oceanites oceanicus) (1) CONFIRMED
- Reported Sep 27, 2025 09:58 by James Stepkowski
- North Pacific Ocean US (35.2023,-121.1367), San Luis Obispo, California
- Map: http://maps.google.com/?ie=UTF8&t=p&z=13&<q...>,-121.136656&<ll...>,-121.136656
- Checklist: https://ebird.org/checklist/S276153719
- Media: 8 Photos
- Comments: "Small dark white-rumped storm-petrel with short squarish (not forked) tail. White on rumped wrapped around to undertail coverts and feet extended past tail in flight. Lacked forked tail of Leach’s SP. Photos by some."

Wilson's Storm-Petrel (Oceanites oceanicus) (1) CONFIRMED
- Reported Sep 27, 2025 09:58 by Lori Renee
- North Pacific Ocean US (35.2023,-121.1367), San Luis Obispo, California
- Map: http://maps.google.com/?ie=UTF8&t=p&z=13&<q...>,-121.136656&<ll...>,-121.136656
- Checklist: https://ebird.org/checklist/S276123830
- Media: 8 Photos
- Comments: "Small dark white-rumped storm-petrel with short squarish (not forked) tail. White on rumped wrapped around to undertail coverts and feet extended past tail in flight. Lacked forked tail of Leach’s SP. Photos by some."

Wilson's Storm-Petrel (Oceanites oceanicus) (1) CONFIRMED
- Reported Sep 27, 2025 09:58 by Yamina Pressler
- North Pacific Ocean US (35.2023,-121.1367), San Luis Obispo, California
- Map: http://maps.google.com/?ie=UTF8&t=p&z=13&<q...>,-121.136656&<ll...>,-121.136656
- Checklist: https://ebird.org/checklist/S276047116
- Media: 8 Photos
- Comments: "Small dark white-rumped storm-petrel with short squarish (not forked) tail. White on rumped wrapped around to undertail coverts and feet extended past tail in flight. Lacked forked tail of Leach’s SP. Photos by some."

Wilson's Storm-Petrel (Oceanites oceanicus) (1) CONFIRMED
- Reported Sep 27, 2025 09:58 by Kathryn Marshall
- North Pacific Ocean US (35.2023,-121.1367), San Luis Obispo, California
- Map: http://maps.google.com/?ie=UTF8&t=p&z=13&<q...>,-121.136656&<ll...>,-121.136656
- Checklist: https://ebird.org/checklist/S276073478
- Media: 8 Photos
- Comments: "Small dark white-rumped storm-petrel with short squarish (not forked) tail. White on rumped wrapped around to undertail coverts and feet extended past tail in flight. Lacked forked tail of Leach’s SP. Photos by some."

Manx Shearwater (Puffinus puffinus) (1)
- Reported Sep 27, 2025 07:40 by Kevin Zimmer
- Boat Trip-Morro Bay to Point Buchon, San Luis Obispo, California
- Map: http://maps.google.com/?ie=UTF8&t=p&z=13&<q...>,-120.9133957&<ll...>,-120.9133957
- Checklist: https://ebird.org/checklist/S275927194
- Media: 2 Photos
- Comments: "Small, blackish-and-white shearwater with entirely white vent; white of flanks riding up over the sides of the rump, forming white 'saddlebags' as on a Violet-green Swallow; white of throat and neck side curling up behind the ear-coverts; sharp division between black and white on the face; blacker (less brownish) upperparts than on Black-vented Shearwater; and whiter wing linings than is typical for Black-vented Shearwater. 2 photos."

Manx Shearwater (Puffinus puffinus) (1)
- Reported Sep 27, 2025 07:40 by Ann Stockert
- Boat Trip-Morro Bay to Point Buchon, San Luis Obispo, California
- Map: http://maps.google.com/?ie=UTF8&t=p&z=13&<q...>,-120.9133957&<ll...>,-120.9133957
- Checklist: https://ebird.org/checklist/S275926601
- Media: 4 Photos
- Comments: "Small Shearwater , dark above and White below with a thin pale crescent behind a dark cheek. Photos"

Least Bittern (Botaurus exilis) (2)
- Reported Sep 28, 2025 08:32 by Robert Slavey
- Laguna Lake, San Luis Obispo, California
- Map: http://maps.google.com/?ie=UTF8&t=p&z=13&<q...>,-120.6903817&<ll...>,-120.6903817
- Checklist: https://ebird.org/checklist/S276108990
- Comments: "Was with two others birders, both with spotting scopes. Also confirmed visual sightings with sound identification in Merlin Bird ID."

Least Bittern (Botaurus exilis) (2)
- Reported Sep 28, 2025 07:23 by Pam Cahn
- Laguna Lake, San Luis Obispo, California
- Map: http://maps.google.com/?ie=UTF8&t=p&z=13&<q...>,-120.6903817&<ll...>,-120.6903817
- Checklist: https://ebird.org/checklist/S276198473
- Media: 2 Photos, 1 Audio
- Comments: "Continuing. Had visual on two together. Viewed from 35°15′52″ N 120°41′8″ W
Located at 35°15′50″ N 120°41′6″ W LEBI screech call is :55 in on audio."

Least Bittern (Botaurus exilis) (2)
- Reported Sep 28, 2025 07:23 by Barbara Webster
- Laguna Lake, San Luis Obispo, California
- Map: http://maps.google.com/?ie=UTF8&t=p&z=13&<q...>,-120.6903817&<ll...>,-120.6903817
- Checklist: https://ebird.org/checklist/S276198472
- Media: 2 Photos, 1 Audio
- Comments: "Continuing. Had visual on two together. Viewed from 35°15′52″ N 120°41′8″ W
Located at 35°15′50″ N 120°41′6″ W LEBI screech call is :55 in on audio."

Little Blue Heron (Egretta caerulea) (1)
- Reported Sep 28, 2025 15:25 by Russ Namitz
- Laguna Lake, San Luis Obispo, California
- Map: http://maps.google.com/?ie=UTF8&t=p&z=13&<q...>,-120.6903817&<ll...>,-120.6903817
- Checklist: https://ebird.org/checklist/S276172325
- Comments: "Continuing. Photo."

Little Blue Heron (Egretta caerulea) (1)
- Reported Sep 28, 2025 15:25 by Leisyka Parrott
- Laguna Lake, San Luis Obispo, California
- Map: http://maps.google.com/?ie=UTF8&t=p&z=13&<q...>,-120.6903817&<ll...>,-120.6903817
- Checklist: https://ebird.org/checklist/S276172326
- Comments: "Continuing. Photo."

Little Blue Heron (Egretta caerulea) (1)
- Reported Sep 28, 2025 14:47 by Robbie & Bob Revel
- Laguna Lake, San Luis Obispo, California
- Map: http://maps.google.com/?ie=UTF8&t=p&z=13&<q...>,-120.6903817&<ll...>,-120.6903817
- Checklist: https://ebird.org/checklist/S276168200
- Media: 1 Photo
- Comments: "LB Heron observed across the lake and flew across to the near side. Seen by John Dunn and the rest of the party. Photos to be posted."

Little Blue Heron (Egretta caerulea) (1)
- Reported Sep 28, 2025 13:32 by Kristina Van Wert
- Laguna Lake, San Luis Obispo, California
- Map: http://maps.google.com/?ie=UTF8&t=p&z=13&<q...>,-120.6903817&<ll...>,-120.6903817
- Checklist: https://ebird.org/checklist/S276147550
- Comments: "Continuing bird, seen from fishing dock foraging in the creek mouth area"

Little Blue Heron (Egretta caerulea) (1)
- Reported Sep 28, 2025 11:24 by Barbara Webster
- Laguna Lake, San Luis Obispo, California
- Map: http://maps.google.com/?ie=UTF8&t=p&z=13&<q...>,-120.6903817&<ll...>,-120.6903817
- Checklist: https://ebird.org/checklist/S276198647
- Media: 1 Photo
- Comments: "Continuing bird."

Little Blue Heron (Egretta caerulea) (1)
- Reported Sep 28, 2025 11:24 by Pam Cahn
- Laguna Lake, San Luis Obispo, California
- Map: http://maps.google.com/?ie=UTF8&t=p&z=13&<q...>,-120.6903817&<ll...>,-120.6903817
- Checklist: https://ebird.org/checklist/S276198649
- Media: 1 Photo
- Comments: "Continuing bird."

Little Blue Heron (Egretta caerulea) (1)
- Reported Sep 28, 2025 08:03 by Sam Larkin
- Laguna Lake, San Luis Obispo, California
- Map: http://maps.google.com/?ie=UTF8&t=p&z=13&<q...>,-120.6903817&<ll...>,-120.6903817
- Checklist: https://ebird.org/checklist/S276070603
- Media: 5 Photos
- Comments: "In the outlet again"

Little Blue Heron (Egretta caerulea) (1)
- Reported Sep 28, 2025 07:23 by Pam Cahn
- Laguna Lake, San Luis Obispo, California
- Map: http://maps.google.com/?ie=UTF8&t=p&z=13&<q...>,-120.6903817&<ll...>,-120.6903817
- Checklist: https://ebird.org/checklist/S276198473
- Media: 1 Photo
- Comments: "Continuing."

Little Blue Heron (Egretta caerulea) (1)
- Reported Sep 28, 2025 07:23 by Barbara Webster
- Laguna Lake, San Luis Obispo, California
- Map: http://maps.google.com/?ie=UTF8&t=p&z=13&<q...>,-120.6903817&<ll...>,-120.6903817
- Checklist: https://ebird.org/checklist/S276198472
- Media: 1 Photo
- Comments: "Continuing."

Grasshopper Sparrow (Ammodramus savannarum) (2)
- Reported Sep 28, 2025 12:12 by Virginia Langdon-Lassagne
- Harmony Headlands State Park, San Luis Obispo, California
- Map: http://maps.google.com/?ie=UTF8&t=p&z=13&<q...>,-121.0018122&<ll...>,-121.0018122
- Checklist: https://ebird.org/checklist/S276174671
- Media: 4 Photos, 1 Audio
- Comments: "Unexpected, but we have pretty good photos. Audio."

Grasshopper Sparrow (Ammodramus savannarum) (2)
- Reported Sep 28, 2025 12:12 by Barry Langdon-Lassagne
- Harmony Headlands State Park, San Luis Obispo, California
- Map: http://maps.google.com/?ie=UTF8&t=p&z=13&<q...>,-121.0018122&<ll...>,-121.0018122
- Checklist: https://ebird.org/checklist/S276174673
- Media: 4 Photos, 1 Audio
- Comments: "Unexpected, but we have pretty good photos. Audio."

Blackburnian Warbler (Setophaga fusca) (1)
- Reported Sep 28, 2025 09:40 by Luke Jensen
- Pismo SB--Oceano Campground, San Luis Obispo, California
- Map: http://maps.google.com/?ie=UTF8&t=p&z=13&<q...>,-120.6265268&<ll...>,-120.6265268
- Checklist: https://ebird.org/checklist/S276183857
- Comments: "Seen on maintenance road near entrance refound by Killian. Hard to see because it loved to be in high backs of willows obscured from most people, no one got a picture. Heard off and on as we spent 2 hours their but we could never get any more looks. Seen around 11:00"

Chestnut-sided Warbler (Setophaga pensylvanica) (1)
- Reported Sep 28, 2025 08:30 by Nick & Jane
- Del Mar Park--Morro Bay, San Luis Obispo, California
- Map: http://maps.google.com/?ie=UTF8&t=p&z=13&<q...>,-120.8586752&<ll...>,-120.8586752
- Checklist: https://ebird.org/checklist/S276117992
- Media: 3 Photos
- Comments: "Continuing immature plumaged bird that has been seen for what—almost a week now? First spotted in a pine, then in internal willows ten yards west of bridge, then spotted it working backyard fenceline canopy near parking lot, but maybe twenty yards in (there’s a little path along the fence). Notable fieldmarks: pale grey underside with some chestnut dabs on flanks. Lime-green crown and nape. Lime green back with some dark streaking. Also, some lime wash on vents. Otherwise, pale grey underside, undertail coverts and cheeks. Bold white eyering. Double-white wingbars on pale-edged dark wings. Tail was similar to its pale-edged dark wings. Photos. Seen by multiple birders this morn."

Chestnut-sided Warbler (Setophaga pensylvanica) (1)
- Reported Sep 28, 2025 14:31 by Barbara Webster
- Pismo SB--Oceano Campground, San Luis Obispo, California
- Map: http://maps.google.com/?ie=UTF8&t=p&z=13&<q...>,-120.6265268&<ll...>,-120.6265268
- Checklist: https://ebird.org/checklist/S276192796
- Comments: "Continuing. Warbler with green upper with 2 white wing bars, plain greyish white underside, bold white eye ring. In constant motion mixed flock. Thanks, Curtis!"

Chestnut-sided Warbler (Setophaga pensylvanica) (1)
- Reported Sep 28, 2025 14:31 by Pam Cahn
- Pismo SB--Oceano Campground, San Luis Obispo, California
- Map: http://maps.google.com/?ie=UTF8&t=p&z=13&<q...>,-120.6265268&<ll...>,-120.6265268
- Checklist: https://ebird.org/checklist/S276192795
- Comments: "Continuing. Warbler with green upper with 2 white wing bars, plain greyish white underside, bold white eye ring. In constant motion mixed flock. Thanks, Curtis!"

Chestnut-sided Warbler (Setophaga pensylvanica) (2)
- Reported Sep 28, 2025 09:40 by Luke Jensen
- Pismo SB--Oceano Campground, San Luis Obispo, California
- Map: http://maps.google.com/?ie=UTF8&t=p&z=13&<q...>,-120.6265268&<ll...>,-120.6265268
- Checklist: https://ebird.org/checklist/S276183857
- Comments: "Seen in major flock at entrance to maintanace road. hatch year male and hatch year female. Saw and heard at same time in different locations, male being closer to ground and female high up in Eucs calling loud and rabidly. Mostly obscured but steve did get a picture of hatch year male in willows. I think I might have a picture but terrible lighting took it's Tool. Seen around 11:00 AM"

Rose-breasted Grosbeak (Pheucticus ludovicianus) (1)
- Reported Sep 28, 2025 14:45 by Christine Hogue
- Backfence, Arroyo Grande US-CA, San Luis Obispo, California
- Map: http://maps.google.com/?ie=UTF8&t=p&z=13&<q...>,-120.569998&<ll...>,-120.569998
- Checklist: https://ebird.org/checklist/S276195235
- Media: 4 Photos
- Comments: "Continuing female. Photos."

***********

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