Nils Warnock
dunlin.bsky.social
Nils Warnock
@dunlin.bsky.social
Ornithologist. Especially interested in shorebirds and migration. Based in California with affinity for Alaska and Rhode Island. Unless noted, photos are my own. All photos taken with Sony RX10 IV or iphone.
Sunset on the hills above Marshall, CA.
January 30, 2026 at 1:42 AM
Black-necked Stilt roaming the Central Valley of California. #birds #shorebirds
January 22, 2026 at 2:04 AM
Tundra Swans feeding in flooded rice fields somewhere outside of Colusa, CA #birds
January 16, 2026 at 10:29 PM
Snow geese flying by at Gray Lodge Wildlife Area, CA. #birds.
January 16, 2026 at 10:25 PM
The elephant seals are back. Point Reyes National Seashore, CA. One of the big males defending the beach.
January 13, 2026 at 2:25 PM
The King Tide at Tomales Bay today did not bother this Great Blue Heron. #birds
January 5, 2026 at 2:24 AM
Reposted by Nils Warnock
Your activism will be even more important this year.

Here are 10 crucial things you can do in 2026. https://robertreich.substack.com/p/what-you-can-do-in-2026
10 Crucial Things You Can Do in 2026
Your activism will be even more important this year
robertreich.substack.com
January 4, 2026 at 9:01 PM
Waiting for the New Year - Harbor Seal and Bufflehead on Tomales Bay, Marshall, CA. Happy New Year. #birds
January 1, 2026 at 1:55 AM
Male Bufflehead courting and chasing females at Tomales Bay, Marshall, CA #birds
December 27, 2025 at 1:34 AM
In between winter storms at Tomales Bay, Least Sandpipers. #birds #shorebirds
December 24, 2025 at 8:14 PM
Boat portion of yesterday’s Point Reyes Christmas Bird Count was dead calm. Here passing by Cypress Grove. #birds
December 21, 2025 at 7:36 PM
Snowy Egret on a windy day. Cypress Grove, Tomales Bay, CA #birds
December 14, 2025 at 2:24 AM
Long-billed Dowitcher in its Basic glory. Abbott's Lagoon, Point Reyes National Seashore. #shorebirds #birds
December 12, 2025 at 7:38 PM
Reposted by Nils Warnock
📣Please share: We are looking for a field assistant to join our team in studying #ruffs on coastal meadows at Botnian Bay in Finland. The job will provide fantastic insights into lekking behaviour and provide essential skills in field ornithology. Details here www.bi.mpg.de/2790786/2512...
December 8, 2025 at 4:25 PM
Agitated Hermit Thrush scolding me. Cypress Grove, Marshall, CA #birds
December 6, 2025 at 6:50 PM
Reposted by Nils Warnock
When you deploy a tracking device, how long do you expect it to last? We all hope for the best, but that's often not reality. 😞 For more information, check out Emily Weiser's new paper with help from many (many) folks in the shorebird community. nsojournals.onlinelibrary.wiley.com/doi/10.1002/...
Power source, data retrieval method, and attachment type affect success of dorsally mounted tracking tag deployments in 37 species of shorebirds
Animal-borne trackers are commonly used to study bird movements, including in long-distance migrants such as shorebirds. Selecting a tracker and attachment method can be daunting, and methodological ...
nsojournals.onlinelibrary.wiley.com
December 5, 2025 at 2:40 PM
A young Anna's Hummingbird, Fremont, CA #birds
December 4, 2025 at 9:49 PM
Downy Woodpecker up in the persimmon tree. Fremont, CA #birds
November 30, 2025 at 4:14 AM
Reposted by Nils Warnock
A ground-breaking study has revealed that migratory songbirds follow an unexpectedly rigid and genetically driven flight pattern, challenging long‑held views of migration as a flexible, externally dictated process:
Migratory songbirds follow precise internal flight plan, study finds
A new study on Red-backed Shrikes reveals that migratory flights are organised into highly structured segments under an internal circannual genetic programme, rather than being solely driven by environment. The findings challenge traditional views of bird migration and raise concerns over how climate‑induced disruptions of external cues may interfere with these deeply programmed flight patterns.
bit.ly
November 27, 2025 at 12:46 PM
These fences can be dangerous for birds, especially placed out into the water. Point Reyes National Seashore. #birds #shorebirds
November 26, 2025 at 10:41 PM