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Nils Warnock

@dunlin.bsky.social
1.9K followers 972 following 305 posts

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.

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Nils Warnock @dunlin.bsky.social · 5h
Preening Trumpeter Swan, Westchester Lagoon, Anchorage, AK. #birds
Preening Trumpeter Swan
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Nils Warnock @dunlin.bsky.social · 23/09/2026
Early Fall Grey Hairstreak, Fremont, CA #butterflies
Grey Hairstreak on a leaf
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Nils Warnock @dunlin.bsky.social · 21/09/2026
A flock of mostly Sooty Shearwaters feeding on some forage fish (anchovies?) off of Capitola, CA a few days ago. #birds
Feeding flock of mostly Sooty Shearwaters
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Nils Warnock @dunlin.bsky.social · 18/09/2026
Marbled Godwit in the surf, Stinson Beach, CA #shorebirds #birds
Marbled Godwit standing in the surf
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Nils Warnock @dunlin.bsky.social · 16/09/2026
If you are interested in shorebird migration patterns, especially Whimbrel, see Camilo et al.'s new paper - doi.org/10.1111/ibi....
doi.org
A global perspective on the annual cycles of whimbrels
Comparative analyses are central to understanding broad-scale patterns in avian ecology, yet their application is often constrained by fragmented and uneven data availability. Recent advances in trac...
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Nils Warnock @dunlin.bsky.social · 16/09/2026
Hudsonian Whimbrel are migrating through the coast of Central California right now. Stinson Beach, CA. ##birds #shorebirds
Hudsonian Whimbrel on the beach
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Nils Warnock @dunlin.bsky.social · 13/09/2026
Urban birding at the Don Edwards National Wildlife Refuge on San Francisco Bay, CA - the American Avocets have mostly molted into their non-breeding plumage.
American Avocets in flight with power lines in the background
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Nils Warnock @dunlin.bsky.social · 11/09/2026
Young Anna's Hummingbird coming into the penstemon. Fremont, CA #birds
Anna's Hummingbird in flight
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Nils Warnock @dunlin.bsky.social · 09/09/2026
A fall migrant - Northern Yellow Warbler feeding by the stream. Fremont, CA #birds
Yellow Warbler fluttering above a stream
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Nils Warnock @dunlin.bsky.social · 20/08/2026
Least Sandpiper, Little Compton, RI #shorebird #bird
Least Sandpiper standing in water
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Nils Warnock @dunlin.bsky.social · 19/08/2026
Juvenile Least Sandpiper taking a bath. Little Compton, RI. #birds #shorebirds
Juvenile Least Sandpiper taking a bath
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Nils Warnock @dunlin.bsky.social · 19/08/2026
American Goldfinch in the coastal prairie, Newport, RI. #birds
American Goldfinch sitting among yellow flowers
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Nils Warnock @dunlin.bsky.social · 16/08/2026
Providence, RI, just like I pictured it, skyscrapers and everything…
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Nils Warnock @dunlin.bsky.social · 16/08/2026
Summer Azure (I think). Trustom Pond National Wildlife Refuge, RI. #butterflies
butterfly sitting on a leaf
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Nils Warnock @dunlin.bsky.social · 08/08/2026
Pileated Woodpecker, Ridgefield, CT #birds
Pileated Woodpecker sitting on a log
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Nils Warnock @dunlin.bsky.social · 28/07/2026
Adult (L) and juvenile (R) Wilson's Phalarope. An Osprey was flying by. Mono Lake, CA #birds #shorebirds
Wilson's Phalaropes looking up into the sky
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Nils Warnock @dunlin.bsky.social · 23/07/2026
Sunrise on the Green River, Utah.
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Nils Warnock @dunlin.bsky.social · 13/07/2026
Vivid Dancer, Fremont, CA #dragonflies
Dragonfly perched on a sage leaf
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Nils Warnock @dunlin.bsky.social · 23/06/2026
Baby wild turkey n the garden. Marshall, CA #birds
baby wild turkey in the dandilions
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Reposted by Nils Warnock
American Ornithological Society @amornith.bsky.social · 10/06/2026
Congratulations to Drs Jeffery L Larkin & Nils Warnock for winning AOS 2026 Ralph W Schreiber Conservation Awards for conservation-related contributions to ornithology. americanornithology.org/aos-announc… #AOSAwards
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Nils Warnock @dunlin.bsky.social · 08/06/2026
My first Gray Hairstreak of the season. Marshall, CA #butterflies
butterfly on a blade of grass
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Nils Warnock @dunlin.bsky.social · 04/06/2026
Always a treat when you get to see as well as hear the beautiful Yellow-breasted Chat. Only the second one I have seen here at Cypress Grove, Marshall, CA. #birds
Yellow-breasted Chat in a twinberry bush
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Nils Warnock @dunlin.bsky.social · 26/05/2026
Wrentit singing its evening song, Marshall, CA #birds
Wrentit on a branch
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Nils Warnock @dunlin.bsky.social · 19/05/2026
Orange-crowned Warbler in the willows #birds
Orange-crowned Warbler perched on a branch
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Nils Warnock @dunlin.bsky.social · 17/05/2026
Warning – a disturbing picture. Take care of your fishing gear! It can kill wildlife. A Double-crested Cormorant that got its head stuck in a crab trap and then got tangled in a tree with deadly results. Marshall, Tomales Bay, CA.
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Nils Warnock @dunlin.bsky.social · 04/05/2026
Roosting Great Horned Owl, Drake's Beach, Point Reyes National Seashore, CA #birds
Sleeping Great Horned Owl sitting on a dead branch
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Nils Warnock @dunlin.bsky.social · 03/05/2026
A flock of migrating Bonaparte's Gulls that came in for a rest and drink at Point Reyes National Seashore today. #bird
Bonaparte's Gulls in the water
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Nils Warnock @dunlin.bsky.social · 29/04/2026
A beautiful Gray Fox sitting in our driveway. Cypress Grove, Marshall, CA #wildlife
Gray Fox sitting in the road
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Nils Warnock @dunlin.bsky.social · 13/04/2026
The no-spots, Spotted Sandpiper hunting invertebrates. Should be molting into breeding plumage (=spots) soon. Marshall, CA #shorebirds #birds
Spotted Sandpiper hunting invertebrates along the shoreline of Tomales Bay
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Nils Warnock @dunlin.bsky.social · 06/04/2026
I have been looking for this Anna's Hummingbird nest for the past week. I finally found it less than a meter off of the path I walk almost every day. Marshall, CA #birds
Female Anna's Hummingbird sitting on a nest made of lichen and spider webs
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Nils Warnock @dunlin.bsky.social · 05/04/2026
Shorebird migration is on here along the central California coast. A flock of Hudsonian Whimbrel making the move. #birds #shorebirds
flying flock of Hudsonian Whimbrel over the surfline.
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Nils Warnock @dunlin.bsky.social · 30/03/2026
The strike - Great Egret in the process of catching a stickleback. Point Reyes National Seashore, CA #birds
Great Egret in the process of catching a stickleback while plunging its head in the water..
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Nils Warnock @dunlin.bsky.social · 28/03/2026
She just froze and stared at me. A female Anna's Hummingbird that I suspect has a nearby nest. Marshall, CA #birds
female Anna's Hummngbird perched on a stick
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Nils Warnock @dunlin.bsky.social · 24/03/2026
Snowy Plover trying to look like a Wrybill. Point Reyes National Seashore, CA #birds #shorebirds
Male Snowy Plover roosting in the sand
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Reposted by Nils Warnock
𝙱.𝙺. 𝚂𝚊𝚗𝚍𝚎𝚛𝚌𝚘𝚌𝚔 @bksandercock.bsky.social · 24/03/2026
New article in Oikos with a global review of annual survival for waders comparing estimation methods and phylogeny. Survival increases with body mass but decreases with migration distance and during past 40 years. Team led by @dillensegerg.bsky.social. #ornithology #waders doi.org/10.1002/oik....
Annual survival of waders versus adult body mass, migration distance and year of study
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Convention on Migratory Species (CMS) @cms.int · 23/03/2026
As #CMSCOP15 starts today, AFP highlights the Hudsonian godwit, one of the world’s most extraordinary migratory birds which has declined 95% in just four decades, showing why international action matters now more than ever. In English: www.france24.com/en/live-news... En français : f24.my/Bog9
france24.com
Can nations save the shorebird that flies 30,000 km a year?
Chasing an endless summer, one shorebird species undertakes a grueling annual journey from the Arctic to the tip of South America and back -- a feat increasingly fraught with peril.
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Nils Warnock @dunlin.bsky.social · 22/03/2026
Horned Lark in the setting sun. Tomales, CA #birds
Horned Lark in the setting sun
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Nils Warnock @dunlin.bsky.social · 17/03/2026
A floofed out White-crowned Sparrow in Point Reyes National Seashore, CA. #birds
white-crowned sparrow with feathers blown out by wind
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Nils Warnock @dunlin.bsky.social · 15/03/2026
Western Sandpiper that is just beginning to molt into its breeding plumage. The count down begins. Abbotts Lagoon, Point Reyes National Seashore, CA. #shorebirds #birds
Roosting Western Sandpiper
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Nils Warnock @dunlin.bsky.social · 13/03/2026
Thank you co-authors! Happy to have this one out. nsojournals.onlinelibrary.wiley.com/doi/abs/10.1...
nsojournals.onlinelibrary.wiley.com
Three decades of western sandpiper stopover dynamics during northward migration on the Pacific Coast of North America, 1992–2022
Shorebirds typically spend more time fueling and refueling during migration than they spend in actual flight, and consequently their stopover ecology has important implications for fitness and conser...
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Graham Appleton @wadertales.bsky.social · 10/03/2026
Nice! Previous BTO longevity record for Curlew was 32 years 7 months, set in 2011. Blog with longevity records for other waders: wadertales.wordpress.com/2018/01/16/w... #ornithology
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Nils Warnock @dunlin.bsky.social · 10/03/2026
Half a smelt is better than no smelt. Our local Osprey brought his/her half eaten fish to the nest tree. Cypress Grove, Marshall, CA #birds
Osprey with a fish
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Nils Warnock @dunlin.bsky.social · 08/03/2026
Strutting toms and unimpressed females. Wild turkeys at Cypress Grove, Marshall, CA. #birds
Displaying wild turkeys
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Reposted by Nils Warnock
W. P. Mueller @wpmueller.bsky.social · 04/03/2026
#ornithology academic.oup.com/condor/advan...
academic.oup.com
Breeding shorebird surveys in the Arctic National Wildlife Refuge, Alaska, suggest population declines over two decades for most species
Abstract. Shorebird populations are declining globally but it generally remains unclear how those declines translate to changes at the regional scale. We c
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W. P. Mueller @wpmueller.bsky.social · 04/03/2026
www.hcn.org/issues/58-3/...
hcn.org
As a caribou herd crashed, wildlife managers turned to killing predators - High Country News
Alaska officials hope to protect a struggling caribou herd & bring back a critical subsistence hunt. Critics say the culling program isn't supported by available science.
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Nils Warnock @dunlin.bsky.social · 03/03/2026
The Spotted Towhees are singing away at the Point Reyes National Seashore, CA #birds
Spotted Towhee sitting on a bush
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Nils Warnock @dunlin.bsky.social · 25/02/2026
Defending his territory - male Anna's Hummingbird at Cypress Grove, Tomales Bay, CA #birds
Male Anna's Hummingbird
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W. P. Mueller @wpmueller.bsky.social · 21/02/2026
#ornithology www.sciencedirect.com/science/arti...
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Nils Warnock @dunlin.bsky.social · 18/02/2026
Western Sandpiper, Abbott's Lagoon, Point Reyes National Seashore, CA #birds #shorebirds
Western sandpiper on beach
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BTO | British Trust for Ornithology @btobirds.bsky.social · 13/02/2026
Last chance to apply for this PhD opportunity ➡️ bit.ly/CurlewPhD Closing date: Wednesday 18 February #Ornithology
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