Date: 1/9/18 4:56 pm From: Daniel Edelstein <danieledelstein...> [northbaybirds] <northbaybirds-noreply...> Subject: [NBB] Mild Infusion Of Gull Abundance & Diversity With Roe Deposition @ Blackie's Pasture, Tiburon, Marin Co.
Today, based on a CDFW email report of herring presence near Schoonmaker Point, Sausalito, I visited at low tide the nearby
mudflat next to Blackie’s Pasture, Tiburon, Marin Co.
Among 75+ gulls, I noticed:
- 1 adult HERRING and one first-cycle HERRING
- all age classes of MEW, CA, & RING-BILLED
- 2 adult WESTERN and 2 first-cycle WESTERN
…..1) To see four BLACK OYSTERCATCHER foraging with the gulls….after I first heard the BLACK OYSTERCATCHER
individuals….Perhaps the roe egg abundance attracted them to the mudflat with the gulls, given I typically more often see
BLACK OYSTERCATCHER(s) amid rocky shorelines.
….2) To notice all of the gulls return to feed in the same area after getting spooked by a bicyclist who came close to the group
to shoot a photo….with the abundance of roe eggs likely a “magnet” that again attracted the gulls and maintained their attention
after the bicyclist left.