Date: 9/4/25 10:40 am
From: eBird alert via groups.io <alert.ebird...>
Subject: [slocobirding] [eBird Alert] San Luis Obispo County Rare Bird Alert
*** Species Summary:

- Least Bittern (1 report)
- Yellow-crowned Night Heron (8 reports)
- Little Blue Heron (2 reports)
- Red-eyed Vireo (1 report)
- Tennessee Warbler (1 report)
- Orange-crowned Warbler (sordida) (2 reports)
- Wilson's Warbler (chryseola) (1 report)
- Wilson's Warbler (pileolata) (1 report)

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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.

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Least Bittern (Botaurus exilis) (1)
- Reported Sep 03, 2025 08:45 by Gabriel Rudy
- 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/S271297873
- Comments: "Flew right near me while on the dock here (35.265969, -120.692199) from one set of reeds to another. Then heard vocalizing about 5 minutes later from the same location “rick-rick-rick-rick”. Small heron, very bright pale coloring. No photo, didn’t see it for more than a few seconds before it was out of sight in the reeds."

Yellow-crowned Night Heron (Nyctanassa violacea) (1) CONFIRMED
- Reported Sep 03, 2025 12:29 by Mike Bush
- MBSP-Bayside Cafe Point, San Luis Obispo, California
- Map: http://maps.google.com/?ie=UTF8&t=p&z=13&<q...>,-120.8439536&<ll...>,-120.8439536
- Checklist: https://ebird.org/checklist/S271310770
- Media: 3 Photos
- Comments: "Immature. Very large, dark bill with yellow-gray legs. Seen on boat Dragonfly opposite Bayside Cafe."

Yellow-crowned Night Heron (Nyctanassa violacea) (1) CONFIRMED
- Reported Sep 03, 2025 12:29 by Jeanne Miller
- MBSP-Bayside Cafe Point, San Luis Obispo, California
- Map: http://maps.google.com/?ie=UTF8&t=p&z=13&<q...>,-120.8439536&<ll...>,-120.8439536
- Checklist: https://ebird.org/checklist/S271343904
- Media: 3 Photos
- Comments: "Immature. Very large, dark bill with yellow-gray legs. Seen on boat Dragonfly opposite Bayside Cafe."

Yellow-crowned Night Heron (Nyctanassa violacea) (1) CONFIRMED
- Reported Sep 03, 2025 09:36 by Tom Edell
- MBSP-Bayside Cafe Point, San Luis Obispo, California
- Map: http://maps.google.com/?ie=UTF8&t=p&z=13&<q...>,-120.8439536&<ll...>,-120.8439536
- Checklist: https://ebird.org/checklist/S271304641
- Media: 5 Photos
- Comments: "I was heading toward the west end of the parking lot when I spotted a night heron on one of the boats that appeared darkish gray and stopped to get a better look. I noted the small white marks at the tips of the wing coverts and then the dark bill with a yellowish base and a yellow chin. The pale underparts were streaked with gray and the head was densely streaked with gray and white. The bird was first seen on the boat named 'Real Time' and had moved to the boat named 'Dragonfly' before I left. Both boats are at the western end of the State Park Marina near the Bayside Cafe. (photos)"

Yellow-crowned Night Heron (Nyctanassa violacea) (1) CONFIRMED
- Reported Sep 03, 2025 12:29 by John Sayers
- Morro Bay SP--Marina/Boardwalk Trail, San Luis Obispo, California
- Map: http://maps.google.com/?ie=UTF8&t=p&z=13&<q...>,-120.8418006&<ll...>,-120.8418006
- Checklist: https://ebird.org/checklist/S271310448
- Comments: "On Dragonfly sailboat. Near Bayside cafe. Two boats west of Reel Time."

Yellow-crowned Night Heron (Nyctanassa violacea) (1) CONFIRMED
- Reported Sep 03, 2025 11:46 by Bob McCay
- Morro Bay SP--Marina/Boardwalk Trail, San Luis Obispo, California
- Map: http://maps.google.com/?ie=UTF8&t=p&z=13&<q...>,-120.8418006&<ll...>,-120.8418006
- Checklist: https://ebird.org/checklist/S271309940
- Media: 2 Photos
- Comments: "Juvenile small upright heron. On a boat just south of the cafe."

Yellow-crowned Night Heron (Nyctanassa violacea) (1) CONFIRMED
- Reported Sep 03, 2025 10:48 by Alexander Yan
- Morro Bay SP--Marina/Boardwalk Trail, San Luis Obispo, California
- Map: http://maps.google.com/?ie=UTF8&t=p&z=13&<q...>,-120.8418006&<ll...>,-120.8418006
- Checklist: https://ebird.org/checklist/S271304908
- Media: 1 Photo
- Comments: "Continuing juvenile originally found by Tom on REEL TIME. Now on sailboat DRAGONFLY close to the restaurant."

Yellow-crowned Night Heron (Nyctanassa violacea) (1) CONFIRMED
- Reported Sep 03, 2025 12:26 by Owen Shapleigh
- Morro Bay SP--Natural History Museum, San Luis Obispo, California
- Map: http://maps.google.com/?ie=UTF8&t=p&z=13&<q...>,-120.8437825&<ll...>,-120.8437825
- Checklist: https://ebird.org/checklist/S271311844
- Comments: "Juvenile. Slightly hooked bill. 2 boats west of “reel time”. Spotted by a few others."

Yellow-crowned Night Heron (Nyctanassa violacea) (1) CONFIRMED
- Reported Sep 03, 2025 17:00 by Terri Osborn
- Yellow-crowned Night Heron, MBSP-Bayside Cafe Point, Morro Bay,, San Luis Obispo, California
- Map: http://maps.google.com/?ie=UTF8&t=p&z=13&<q...>,-120.8428234&<ll...>,-120.8428234
- Checklist: https://ebird.org/checklist/S271357765
- Media: 3 Photos
- Comments: "Immature Yellow-crowned Night Heron found earlier today by Tom Edell. Brown and white mottling on body and head, brown wings marked with small white triangles, dark bill but lighter at the base, reddish orange eyes, and yellowish gray legs. It was resting on a sailboat next to the boat "Reel Time" in the marina just south of the Bayside Cafe."

Little Blue Heron (Egretta caerulea) (1) CONFIRMED
- Reported Sep 02, 2025 08:17 by Kevin Zimmer
- 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/S271345521
- Comments: "Continuing juvenile. Perched distantly, but identifiable with the scope: all white, smallish egret with uniformly olive tarsi and toes, and bicolored bill with bluish-gray base contrasting with blackish distal portion. Too far for photos or to discern the dusky tips to primaries or the whitish irides."

Little Blue Heron (Egretta caerulea) (1) CONFIRMED
- Reported Sep 01, 2025 11:50 by Jeanne Miller
- 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/S271343912
- Comments: "Very distant view to the far north reeds across the Lake. Small white heron with a black bill."

Red-eyed Vireo (Vireo olivaceus) (1)
- Reported Sep 03, 2025 07:18 by Ann Stockert
- Arroyo Grande Creek--Fair Oaks Ave Bridge, San Luis Obispo, California
- Map: http://maps.google.com/?ie=UTF8&t=p&z=13&<q...>,-120.5872571&<ll...>,-120.5872571
- Checklist: https://ebird.org/checklist/S271284308
- Comments: "Continuing. Seen briefly but well foraging on the other side of the creek ~35 ft up creek from where it was yesterday. Large vireo with grayish cap, large bill, strong dark eyeline, greenish back, paler underparts, and red eye. Unfortunately no pics."

Tennessee Warbler (Leiothlypis peregrina) (1) CONFIRMED
- Reported Sep 03, 2025 16:45 by Kaaren Perry
- Morro Bay yard, San Luis Obispo, California
- Map: http://maps.google.com/?ie=UTF8&t=p&z=13&<q...>,-120.844846&<ll...>,-120.844846
- Checklist: https://ebird.org/checklist/S271357078
- Media: 1 Photo
- Comments: "Continuing to be seen occasionally at this location. First reported July 18, 2025 in heavy molt."

Orange-crowned Warbler (sordida) (Leiothlypis celata sordida) (2)
- Reported Sep 03, 2025 07:18 by Ann Stockert
- Arroyo Grande Creek--Fair Oaks Ave Bridge, San Luis Obispo, California
- Map: http://maps.google.com/?ie=UTF8&t=p&z=13&<q...>,-120.5872571&<ll...>,-120.5872571
- Checklist: https://ebird.org/checklist/S271284308
- Comments: "Continuing bird plus new. Expected. Dull streaky OCWAs with large spiky bills, strongly streaked undertail coverts, green upper and paler lower eye arcs, husky, metallic, almost waterthrush-like chip, and trilly, half-hearted sounding song. Pics maybe..?"

Orange-crowned Warbler (sordida) (Leiothlypis celata sordida) (1)
- Reported Sep 03, 2025 09:23 by Ann Stockert
- Meadow Creek/Monarch Butterfly Preserve, San Luis Obispo, California
- Map: http://maps.google.com/?ie=UTF8&t=p&z=13&<q...>,-120.6328654&<ll...>,-120.6328654
- Checklist: https://ebird.org/checklist/S271305317
- Comments: "Expected early fall migrant. Dull streaky OCWA with massive spiky bill, strongly streaked undertail covs, greener upper and paler lower eye arcs, etc. Husky metallic chip and half-hearted trilled song. KH has pics."

Wilson's Warbler (chryseola) (Cardellina pusilla chryseola) (2)
- Reported Sep 03, 2025 09:23 by Ann Stockert
- Meadow Creek/Monarch Butterfly Preserve, San Luis Obispo, California
- Map: http://maps.google.com/?ie=UTF8&t=p&z=13&<q...>,-120.6328654&<ll...>,-120.6328654
- Checklist: https://ebird.org/checklist/S271305317
- Comments: "Expected ssp, good comparison with presumed pileolata"

Wilson's Warbler (pileolata) (Cardellina pusilla pileolata) (1)
- Reported Sep 03, 2025 09:23 by Ann Stockert
- Meadow Creek/Monarch Butterfly Preserve, San Luis Obispo, California
- Map: http://maps.google.com/?ie=UTF8&t=p&z=13&<q...>,-120.6328654&<ll...>,-120.6328654
- Checklist: https://ebird.org/checklist/S271305317
- Comments: "*Regular. Presumed to be pileolata over nominate. Male. Very dull Wilson’s lacking the bright coloration of our local breeders (chryseola), particularly gold orange in the forehead and lores. Instead lores were slightly greenish. Smaller cap than chryseola, more pronounced eyering. Appeared to have some retained greenish feathers on forehead…? Silent. Pics."

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