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Re: Mystery Warbler (photos provided) in Carmel Valley

Thanks to everyone that responded! I’ve received suggestions of both Mourning and MacGillivray’s. The images I’ve researched look more like Mourning, but location and rarity definitely lean towards MacGillivray’s.  I’ll keep researching and if I get an expert to look at them and provide a positive ID, I’ll let you know. 

If anyone would like me to send the full-res images directly via email so you can zoom/pan, please let me know. Apparently, eBird does not allow you to zoom in on the images.
Lastly, since I was biking/birding for over 7 hours around Carmel Valley, Sorrento Valley, and west Peñasquitos Canyon / Lagoon, my checklist was flagged for “Distance too long”. Although my odometer stated 28 miles covered, I didn’t travel that far from home (as a crow flies), trying to keep in the spirit of a “COVID Challenge” Big Day. I guess I should have created over a dozen little mini-checklists, with specific locations and durations and distances, but I didn’t. 
So, my checklist (https://ebird.org/checklist/S68776286) is in this state: "Distance too long. This checklist has been flagged by a reviewer for covering a large distance. Specific locations and shorter distances are required for public display: this checklist and its observations do not appear in public eBird outputs."
I’m curious if anyone else did a Global Big Day on May 9 and if your checklist was later flagged, or how you handled an all-day birding excursion where you covered a 5-mile radius count circle.
Sincerely,
David Trissel
San Diego, CA

Source: SanDiegoRegionBirding Latest Reports