George Ordiway
@georgeordiway.bsky.social
260 followers 130 following 58 posts
Postdoc at Columbia's Zuckerman Institute studying the neuroscience of birdsong and auditory perception. 🧪 Also a classical music nerd and DnD nerd and video game nerd.
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georgeordiway.bsky.social
The funny part is back in 1910 they probably thought the hyrax was similar to these other animals. But they're actually more related to manatees and elephants than they are to other rodents!
youtu.be/ASOyzh27VbY?...
georgeordiway.bsky.social
However. It's the perfect "but wait, there's more!" way to connect one idea to another and keep the reader engaged. However, it backfires when every sentence demands a revaluation. Regardless, it is all too easy to get stuck in this cadence and have to revise the last few paragraphs.
georgeordiway.bsky.social
I think this is my favorite thread in all of Bluesky.
georgeordiway.bsky.social
Maybe which came first, the pencil or the eraser?
The roof or the ceiling?
georgeordiway.bsky.social
Does anyone have a good alternative for the "chicken and egg" problem? We know the egg came first, dinosaurs and amniotes were laying eggs millions of years before good ol' Gallus gallus came along. We need a better way to phrase "which came first".
Reposted by George Ordiway
biodiversitypix.bsky.social
🦅 Birds in flight
London, Gay & Hancock Limited, 1922.

[Source]
Historical illustration titled "Birds in flight," published London, 1922, depicting ten different bird species in mid-flight on a beige background. Each bird is numbered and includes a Partridge, Gannet, Whitethroat, Red-Backed Shrike, Magpie, Goldfinch, Great Crested Grebe, Buzzard, Puffin, and Grey Wagtail. The buzzard (number 8) is shown with broad wings, brown and cream plumage with detailed feathers, highlighting its flight posture. The illustration is detailed and naturalistic, emphasizing wing shapes, colors, and flight dynamics of each bird for educational purposes.
georgeordiway.bsky.social
xkcd.com/1383/ relevant xkcd because there's always a relevant xkcd.
georgeordiway.bsky.social
I can see how people spend decades studying Emily Dickinson. "Repose to typify" is incredible. It sounds linguistically soothing to say.
neurovenki.bsky.social
Some Emily Dickinson for a fraught Friday night. #poetry
Reposted by George Ordiway
stacyfarina.bsky.social
Good to know that AI image generation hasn't (yet) conquered my "draw a vertebrate phylogeny" assignment.
georgeordiway.bsky.social
youtu.be/_BrFKp-U8GI?... @3blue1brown.com always makes great videos, but this one is a masterpiece. From beautiful animations to going through the step by step creative process rooted in art or rooted in mathematics. Trial and error, labelling and symmetry. Bravo
Exploration & Epiphany
YouTube video by 3Blue1Brown
youtu.be
Reposted by George Ordiway
biodiversitypix.bsky.social
🦤 A monograph of the genus Casuarius
London: Zoological Society of London, 1900

[Source]
Illustration of the head and upper neck of a cassowary (Casuarius casuarius intensus) from a 1900 zoological monograph. The bird features a prominent brown casque on top of its head, bright blue skin on its neck with scales and textured patterns, a striking orange wattle on the side, and glossy black feathers on its lower neck. The cassowary's sharp, curved beak and large, expressive brown eye are clearly detailed in this scientific depiction.
georgeordiway.bsky.social
Who knows if that pithy comment will survive peer review. I, for one, would prefer units of football fields. Perhaps elephants.
georgeordiway.bsky.social
Love this part from the conclusion "broad auditory tuning may allow for greater awareness of diverse sound sources in their environments."
There's a good chance that enriched, diverse environments lead to better auditory processing and sensitivity.
matiasimunoz.bsky.social
Do birds tune their songs to their hearing?

Is there tight coevolution between avian vocal signals and hearing-or do signallers and perceivers evolve more loosely?

It turns out perfect tuning is not required...

Preprint: www.biorxiv.org/content/10.1...

#bioacoustics
#prattle 💬
#ornithology 🪶
georgeordiway.bsky.social
5/🧵 If you don't have HCN channels, it's not the end of the world. BUT when a mutant mouse lacks HCN channels, they get worse at localizing sound. And guess what, naked mole rats have way fewer HCN channels! Why? They don't need good sound localization because they live in tunnels!
a picture of a naked mole rat wearing sunglasses and the words deal with it below it
ALT: a picture of a naked mole rat wearing sunglasses and the words deal with it below it
media.tenor.com
georgeordiway.bsky.social
4/🧵 HCN channels are in the heart, the cerebellum, the hippocampus, all over. They help cells fire quickly, they help cells fire in bursts, they help cells fire spontaneously. In the auditory system, these channels are everywhere! And lots of papers have studied it, we found 165 of them!
a red heart with a heartbeat line coming out of it
ALT: a red heart with a heartbeat line coming out of it
media.tenor.com
georgeordiway.bsky.social
3/🧵 In short, HCN channels open when the neuron's voltage goes DOWN (more negative), and their function is affected by the presence of small molecules called nucleotides. Both of those things are pretty unique. but what does the channel actually do? It depends on where you look!
a computer generated image of a nerve cell with red lights
ALT: a computer generated image of a nerve cell with red lights
media.tenor.com
georgeordiway.bsky.social
2/🧵 What is an HCN channel? You may be familiar with ion channels, the special proteins that allow sodium and potassium ions to change the electricity within a neuron. "HCN" stands for hyperpolarization-activated, cyclic nucleotide-gated channels, which is a mouthful!
a salt shaker with the words sodium city on the bottom
ALT: a salt shaker with the words sodium city on the bottom
media.tenor.com
georgeordiway.bsky.social
I'm always a fan of avian research using a variety of bird species. Also there's something hilarious about a hornbill looking at different configurations of string, and scientists waiting with bated breath to record reaction time.
biorxiv-behav.bsky.social
Hornbills Adjust Response Speed According to Solvability of Patterned-Strings Problems https://www.biorxiv.org/content/10.1101/2025.06.25.661464v1
georgeordiway.bsky.social
Well this made me think about the danger of a large portion of my career, creativity, and relaxation using the exact same device as the addiction. "You should smoke" is a lot harder to resist if your job is cigarette inspector and you go home to read a cigarette box.