Jason Gregg
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jasongregg.bsky.social
Jason Gregg
@jasongregg.bsky.social
430 followers 390 following 140 posts
Conservation biologist and writer.

See my work at: jasonjgregg.com
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jasongregg.bsky.social
Pink eye, but the good kind
jwthogg.bsky.social James W T Hogg @jwthogg.bsky.social · 3d
Pink-necked Green-pigeon

One of the most common birds in Singapore, and one of the prettiest…

Jurong Lake Gardens, Singapore, Nov 25

#birds #birding #birdphotography #nature #naturephotography #wildlife #wildlifephotography #birdsseenin2025 #singapore
December 4, 2025 at 1:01 AM
Reposted by Jason Gregg
alexanderlees.bsky.social
Huge News from the Western Amazon: it's the year 2025 and we are still describing entirely new, strikingly-distinctive large-bodied bird species! Behold Tinamus resonans sp. nov. the Slaty-masked Tinamou mapress.com/zt/article/v... #Ornithology @tetzoo.bsky.social 🪶
Photo montage of Tinamus resonans sp. nov., a new species of tinamou from the montane forests of the Serra do Divisor, western Amazonia, Brazil. The species is distinguished by a unique combination of plumage pattern, vocal repertoire, and ecological characteristics, including a conspicuous dark slate facial mask, vivid rufous-cinnamon underparts, and a uniform brownish-gray back. Its vocalizations are remarkable, consisting of long and powerful songs that echo strikingly across the steep montane slopes, producing a characteristic resonant effect. The species was documented exclusively at higher elevations within a transitional zone between submontane and stunted forests, where the understory is densely structured by root mats. A preliminary population estimate, based on field detections and spatial extrapolation, suggests approximately 2,106 individuals restricted to the Serra do Divisor massif. Although no immediate anthropogenic pressures were observed within its range, the species may be highly vulnerable to climate change and to proposed infrastructure projects that threaten the integrity of this federally protected region. The discovery of T. resonans highlights the biological uniqueness of the Serra do Divisor, reinforces its status as a center of montane endemism, and underscores the critical importance of maintaining its long-term conservation.
December 2, 2025 at 7:20 AM
Reposted by Jason Gregg
david-s-richardson.bsky.social
a wonderful, fully funded PhD opportunity

Deadline approaching (ok not that quickly but you may forget over Christmas!)

7th January

www.uea.ac.uk/course/phd-d...
November 28, 2025 at 3:53 PM
Reposted by Jason Gregg
birdguides.bsky.social
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
jasongregg.bsky.social
Sometimes field guide illustrations just don't cut it! Amazing photo of the Upe, one of the world's rarer pigeon species.
📸 Samuel Etienne
November 20, 2025 at 7:25 PM
jasongregg.bsky.social
I saw a goshawk
November 17, 2025 at 6:01 PM
jasongregg.bsky.social
Just so strange and beautiful. A must see pigeon!
amnh.org American Museum of Natural History @amnh.org · 26d
The Orange Fruit Dove decorates the treetops with its flame-like plumage. This species lives in forests on the islands of Fiji, where it munches on fruits and berries. Only males display bold orange plumage; females are green.
Photo: Charles J. Sharp, CC BY-SA 4.0, iNaturalist
A photo of an Orange Dove perched among branches. The bird is orange with a green head.
November 11, 2025 at 3:14 PM
Reposted by Jason Gregg
ornithologistmag.bsky.social
The Blue-eyed Ground Dove has been confirmed as the only living member of the ancient genus Oxypelia. New genetic evidence reveals its deep evolutionary roots and the urgency of conserving its Cerrado refuge.

theornithologist.org/a-lost-dove-...

#TheOrnithologist #Ornithology
A lost dove, a revived genus: new genetic evidence redefines one of Brazil’s rarest birds
Blue-eyed Ground Dove has been confirmed as the only living member of the ancient genus Oxypelia. New genetic evidence reveals its deep evolutionary roots and the urgency of conserving its Cerrado ref...
theornithologist.org
November 11, 2025 at 10:27 AM
Reposted by Jason Gregg
stubutchart.bsky.social
New paper shows mortality of migratory shorebirds along China’s coast from hunting, fishery bycatch and, at aquaculture sites, bird deterrence measures accounts for 1-10% of total flyway populations for 11 species & is unsustainable for several of these. www.nature.com/articles/s41...
November 7, 2025 at 8:42 AM
Reposted by Jason Gregg
race2extinct.bsky.social
Hawaiʻi has 18 plant species with only a single wild individual left. Dozens more around the world hang by the same thread.

We count what’s visible but most extinctions happen before we even know the species exist, plants especially.
#SixthMassExtinction

www.hawaiipublicradio.org/local-news/2...
These Hawaiʻi native plants are the last of their kind in the wild
Hawaiʻi has more endangered plants than all other U.S. states combined. Here's a look at some of the species that are so rare they only have a single wild plant left.
www.hawaiipublicradio.org
November 6, 2025 at 11:40 PM
Reposted by Jason Gregg
dustinmulvaney.bsky.social
California condor range expanding into the Bay Area and Santa Cruz Mountains, further south into Santa Barbara County too. 🪶 www.mercurynews.com/2025/10/20/f...
Following California condors tagged with GPS transmitters, researchers have tracked their expanison in 2025 from the Central Coast to the East Bay and near Santa Barbara. Condor GPS activity in 2025 Sources: Ventana Wildlife Society, heat map provided by Evan McWreath/VWS PAI/BAY AREA NEWS GROUP
October 22, 2025 at 11:07 PM
jasongregg.bsky.social
It's awesome that new bird migration bottlenecks are still being found and described by scientists, like this one in Greece.
October 15, 2025 at 4:52 PM
jasongregg.bsky.social
The IUCN species survival commission has specialist groups for bats, microbes, cranes, and dozens of other species assemblages - This week, I'm excited to be joining the group for pigeons and doves as a member.
October 7, 2025 at 5:17 PM
Reposted by Jason Gregg
americanprogress.bsky.social
The Trump administration has taken actions that would eliminate existing protections from about 88 million acres of public lands. Including the removal of wildlife habitat protections, the total impact of the rollbacks stretches across more than 175 million acres of U.S. land.
A map of the western United States. It shows large areas of land in green, orange, and purple, indicating areas where public land protections are being dismantled. The key indicates that green areas are National forest roadless areas, orange areas are Resource management plans, and purple areas are Lands withdrawn from mining or drilling. The title of the graphic reads, "The Trump administration is dismantling 88 million acres of public lands protections."
September 22, 2025 at 3:03 PM
Reposted by Jason Gregg
mattbetts42.bsky.social
Thanks to @natecoevo.nature.com for publishing this short essay on our Costa Rica hummingbird/heliconia work!
September 18, 2025 at 5:27 PM
Reposted by Jason Gregg
wpmueller.bsky.social
#ornithology
abcbirds.org/news/johnsto...
Celebrating a Win for Seabirds As Proposal for Rocket Test Site Is Suspended
Johnston Atoll is a tiny speck in the Pacific Ocean — approximately 1,400 kilometers southwest of Hawaiʻi. For most people, it's just a name lost in the blue expanse of the map. But for over a million...
abcbirds.org
September 15, 2025 at 8:52 PM
jasongregg.bsky.social
Unlike most of Hawaii, Kaua'i doesn't have mongooses... This recent close call is a scary reminder of how important vigilance + predator control is on islands.
September 12, 2025 at 10:52 PM
jasongregg.bsky.social
biologylu.bsky.social Department of Biology, Lund University @biologylu.bsky.social · Sep 5
Migratory birds aren’t equally efficient at all speeds. A new Lund University study shows thrush nightingales fly most efficiently at 7–8 m/s – the speed they actually use on migration.
@pablomaciastorres.bsky.social & Prof. Anders Hedenström, Animal Flight Lab.

www.biology.lu.se/article/not-...
September 7, 2025 at 5:12 PM
jasongregg.bsky.social
Enjoyed this @mongabay.com story about research modelling drivers of the Indonesian songbird trade. Hearing additional voices about the link between such research and solutions to stopping the trade would have been appreciated.

news.mongabay.com/2025/09/indo...
New model reveals hidden dynamics of Indonesia’s booming songbird trade
Researchers have developed the first model to map how supply and demand interact in Indonesia’s highly lucrative songbird trade, revealing patterns that could help curb poaching pressure on rare and t...
news.mongabay.com
September 3, 2025 at 9:15 PM
jasongregg.bsky.social
Great reporting on the state of wolbachia mosquito releases happening in Hawai'i to save birds edition.cnn.com/science/hawa...
Thousands of mosquitoes are being dropped by drone over islands in Hawaii. Here’s why | CNN
Native Hawaiian honeycreeper birds are being wiped out by avian malaria. Scientists think they can battle the problem by releasing more mosquitoes.
edition.cnn.com
August 12, 2025 at 3:01 AM
Reposted by Jason Gregg
john-cannon.bsky.social
I covered a study for @mongabay.com looking into why deforestation has slowed in Indonesia and the Brazilian Amazon. The researchers found that strong political will played a big role and is often driven by public pressure and international diplomacy. buff.ly/IZPSnBN
July 24, 2025 at 6:55 PM
Reposted by Jason Gregg
marinacoladas.bsky.social
In remote forests of west Africa, wildlife traffickers are filling orders for hundreds of hornbill skulls. The bulbous-billed birds are protected in Asia, but conservationists now worry the market has shifted to African birds.

My latest for @nautil.us

nautil.us/the-hornbill...
The Hornbills Left Behind
Protecting Asian species may have shifted poachers’ focus to African birds
nautil.us
June 19, 2025 at 10:30 PM
jasongregg.bsky.social
so... which Pacific seabirds need the most attention? Ask the experts! Excited to share a new paper in @society4conbio.bsky.social We interviewed 70+ seabird scientists, cultural practitioners and managers across the Pacific.

conbio.onlinelibrary.wiley.com/doi/10.1111/...
June 18, 2025 at 5:26 AM
Reposted by Jason Gregg
nicosgonzalez.bsky.social
USGS’ biological research arm could vanish next week www.hcn.org/articles/usg... via @highcountrynews.org
USGS’ biological research arm could vanish next week - High Country News
Trump is on a multipronged mission to eliminate a science agency that conservationists, toxicologists, universities and more call irreplaceable.
www.hcn.org
May 22, 2025 at 4:28 PM
Reposted by Jason Gregg
johngale8.bsky.social
The large leaved plant on the left of my Blue Bird of Paradise painting is thought to be a new species to science, possibly even a new family....no botanists who study New Guinea flora can identify it or put it to a family....that's crazy!!
December 3, 2024 at 12:17 PM