Cristian Gutierrez-Ibañez's Avatar

Cristian Gutierrez-Ibañez

@gallinaciega

Comparative Neurobiologist. Interested in brain and behaviour evolution. Research associate at the Biological Science dept., U of Alberta. Chileno. He-Him.

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Latest posts by Cristian Gutierrez-Ibañez @gallinaciega

Very cool!

05.03.2026 12:40 👍 0 🔁 0 💬 0 📌 0
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First whole-brain recording of social sound processing in a vertebrate. Surprises start in the hindbrain; thalamus gates conspecific calls; male and female brains diverge downstream. Work by @joerghenninger.bsky.social, @mh123.bsky.social sky.social and team. www.biorxiv.org/content/10.6...

05.03.2026 09:47 👍 113 🔁 44 💬 6 📌 4

I don’t know if it works with pizza but that is a great beer, and now I have to go get one.

27.02.2026 21:16 👍 1 🔁 0 💬 0 📌 0

Was the AI generated picture of birds really necessary.

24.02.2026 20:38 👍 2 🔁 0 💬 0 📌 0

What paper is this?

20.02.2026 16:26 👍 0 🔁 0 💬 1 📌 0
Cartoon. Person says to other person „We invented a robot that answers questions.“, adding, „we just have to feed it 10 baby giraffes a day“. The other person asks „But it answers the questions correctly?“ Person responds „Oh my goodness, no. No no no no no.“

By Aram J. French

Appropriated due to missing alt text

Cartoon. Person says to other person „We invented a robot that answers questions.“, adding, „we just have to feed it 10 baby giraffes a day“. The other person asks „But it answers the questions correctly?“ Person responds „Oh my goodness, no. No no no no no.“ By Aram J. French Appropriated due to missing alt text

12.02.2026 13:44 👍 12665 🔁 4118 💬 3 📌 61
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Opinion: Little evidence of EDI hiring policy in practice at the U of A The U of A’s recruitment data does not show any signs of progress in EDI, let alone patterns of reverse discrimination.

🧵In this new op-ed in the Edmonton Journal, @pinglamjoeip.bsky.social and I debunk the myth that EDI hiring and “reverse discrimination” happened at University of Alberta.

In actuality, the U of A has not made any advancement in EDI hiring.

13.02.2026 20:54 👍 54 🔁 36 💬 1 📌 1

A great write up of our recent paper funded by NSERC and the Smithsonian Institution that concluded that the extinct Apteribis of Hawaii might have been nocturnal.
#birds 🪶🧠🧪

done in collaboration with @weisbeckerbblab.bsky.social

11.02.2026 18:56 👍 24 🔁 5 💬 1 📌 0
The skull of an extinct bird with a long, curved bill. Close-ups show features relevant to interpreting its sensory biology.

The skull of an extinct bird with a long, curved bill. Close-ups show features relevant to interpreting its sensory biology.

Sensory biology and evidence for nocturnality in the extinct Hawaiian ibis Apteribis: academic.oup.com/icb/advance-... 🪶🧪 (📷 @evolsara.bsky.social et al.)

21.12.2025 14:00 👍 21 🔁 5 💬 1 📌 1
Fig 2 Top: digital reconstructions of the skulls of (A) American White Ibis (Eudocimus albus skull ROM112456), and (B) Apteribis sp. (USNMPAL377837), with azure circle highlighting the orbit and green segment highlighting the optic foramen. Bottom: endocasts of (C) Roseate Spoonbill (Platalea ajaja), (D) Apteribis sp., (E) Hadada Ibis (Bostrychia hagedash), (F) Sharp-tailed Ibis (Cercibis oxycerca), (G) American White Ibis (Eudocimus albus), (H) Northern Bald Ibis (Geronticus eremita), (I) Madagascar Ibis (Lophotibis cristata), (J) Green Ibis (Mesembrinibis cayennensis), (K) Crested Ibis (Nipponia nippon), (L) Bare-faced Ibis (Phimosus infuscatus), (M) White-faced Ibis (Plegadis chihi), (N) Red-naped Ibis (Pseudibis papillosa), (O) Black-faced Ibis (Theristicus melanopis), and (P) Straw-necked Ibis (Threskiornis spinicollis). The green-marked brain region highlights the optic lobe. Note the reduced optic system of Apteribis for all three traits: orbits, optic foramen, and optic lobes.

Fig 2 Top: digital reconstructions of the skulls of (A) American White Ibis (Eudocimus albus skull ROM112456), and (B) Apteribis sp. (USNMPAL377837), with azure circle highlighting the orbit and green segment highlighting the optic foramen. Bottom: endocasts of (C) Roseate Spoonbill (Platalea ajaja), (D) Apteribis sp., (E) Hadada Ibis (Bostrychia hagedash), (F) Sharp-tailed Ibis (Cercibis oxycerca), (G) American White Ibis (Eudocimus albus), (H) Northern Bald Ibis (Geronticus eremita), (I) Madagascar Ibis (Lophotibis cristata), (J) Green Ibis (Mesembrinibis cayennensis), (K) Crested Ibis (Nipponia nippon), (L) Bare-faced Ibis (Phimosus infuscatus), (M) White-faced Ibis (Plegadis chihi), (N) Red-naped Ibis (Pseudibis papillosa), (O) Black-faced Ibis (Theristicus melanopis), and (P) Straw-necked Ibis (Threskiornis spinicollis). The green-marked brain region highlights the optic lobe. Note the reduced optic system of Apteribis for all three traits: orbits, optic foramen, and optic lobes.

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" This study provides the first quantitative evidence for the evolution of a kiwi-like niche for a #bird outside New Zealand, and emphasizes the remarkable diversity of #avian lifestyles lost due to #anthropogenic impact..."
ICB's
Sara Citron et al
doi.org/10.1093/icb/...

29.01.2026 12:35 👍 12 🔁 4 💬 0 📌 0
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Extinct Hawaiian ibis with strangely small eyes suggests a shift to nocturnal life Islands are famous for producing some of the world's strangest creatures, and now a new international study shows that the evolution of bird species on Hawaiian islands includes an ibis with unusually small eyes and limited visual capacity.

Fossil evidence indicates the extinct Hawaiian ibis Apteribis had unusually small eyes and limited visual capacity, suggesting it was adapted for nocturnal activity on predator-free islands.

11.02.2026 13:12 👍 3 🔁 3 💬 0 📌 0

FYI if anyone out there is interested, I’m happy to deliver this talk elsewhere via Zoom or in person
#birds

07.02.2026 00:45 👍 26 🔁 8 💬 0 📌 1
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Cellular-level preservation of cutaneous spikes in an Early Cretaceous iguanodontian dinosaur - Nature Ecology & Evolution A juvenile iguanodontian from the Lower Cretaceous of China preserves both spikes and scales in its skin that are different from integumentary structures in either non-avian dinosaurs or extant squama...

Huang, J., Wu, W., Mao, L. et al. Cellular-level preservation of cutaneous spikes in an Early Cretaceous iguanodontian dinosaur. Nat Ecol Evol (2026). doi.org/10.1038/s415...

06.02.2026 13:02 👍 83 🔁 30 💬 4 📌 7
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Homeless Oregon youth got $1,000 a month for two years. Most found housing after • Oregon Capital Chronicle Oregon is the second of its kind in the nation to implement the direct cash transfer program after New York City.

"By the end of the two-year period, 94% of participants reported they were housed."

A million pilot programs show the same thing: when people are given enough money to afford housing, homelessness ends.

Other supports matter, but housing comes first. Not policing. Not moralizing. Homes.

04.02.2026 14:12 👍 3087 🔁 1296 💬 37 📌 98

Bio science building? Cool

03.02.2026 23:16 👍 1 🔁 0 💬 1 📌 0
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Reminder here’s some adobe alternatives, Because FUCK ADOBE….

02.02.2026 19:43 👍 7016 🔁 3694 💬 117 📌 104
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250-Million-Year-Old Fossil Reveals Origins of Our Unique Hearing Modern mammals have unique hearing abilities, able to sense a broad range of volumes and frequencies using middle-ear features, including our eardrums and a few small bones.

www.sciencealert.com/250-million-...

02.02.2026 16:35 👍 30 🔁 6 💬 0 📌 0
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Biomechanics of the mandibular middle ear of the cynodont Thrinaxodon and the evolution of mammal hearing | PNAS The middle ear of mammals is a major functional innovation, distinctive in that it is detached from the mandible and has a tympanic membrane suppor...

www.pnas.org/doi/10.1073/...

02.02.2026 16:34 👍 24 🔁 7 💬 0 📌 0
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The cerebellum supports high-level language?? Now out in @cp-neuron.bsky.social, we systematically examined language-responsive areas of the cerebellum using precision fMRI and identified a *cerebellar satellite* of the neocortical language network!
authors.elsevier.com/a/1mUU83BtfH...
1/n 🧵👇

22.01.2026 17:21 👍 69 🔁 20 💬 2 📌 4
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Oxygen-free metabolism in the bird inner retina supported by the pecten - Nature While the photoreceptor outer segments in the bird outer retina have access to oxygen, the inner retina operates under chronic anoxia, supported by anaerobic glycolysis in the retinal neurons.

Birds have a thick retina devoid of blood vessels - so how do they ensure sufficient oxygen availability?
They don't - neurons rely on glycolysis, metabolizing glucose released from the pecten.

Insane new study that includes comparative data on lizards and crocs.🧪

www.nature.com/articles/s41...

22.01.2026 14:14 👍 112 🔁 44 💬 2 📌 2
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Trump demands Carney give him his standing ovation from Davos DAVOS, SWITZERLAND - Following his poorly-received and rambling address at the World Economic Forum, U.S. President Donald Trump angrily demanded that Canadian Prime Minister Mark Carney personally gi...

www.thebeaverton.com/2026/01/trum...

21.01.2026 22:33 👍 0 🔁 0 💬 0 📌 0
A synaptic locus of song learning Learning by imitation is the foundation for verbal and musical expression, but its underlying neural basis remains obscure. A juvenile male zebra finch imitates the multisyllabic song of an adult tutor in a process that depends on a song-specialized cortico-basal ganglia circuit, affording a powerful system to identify the synaptic substrates of imitative motor learning. Plasticity at a particular set of cortico-basal ganglia synapses is hypothesized to drive rapid learning-related changes in song before these changes are subsequently consolidated in downstream circuits. Nevertheless, this hypothesis is untested and the synaptic locus where learning initially occurs is unknown. By combining a computational framework to quantify song learning with synapse-specific optogenetic and chemogenetic manipulations within and directly downstream of the cortico-basal ganglia circuit, we identified the specific cortico-basal ganglia synapses that drive the acquisition and expression of rapid vocal changes during juvenile song learning and characterized the hours-long timescale over which these changes consolidate. Furthermore, transiently augmenting postsynaptic activity in the basal ganglia briefly accelerates learning rates and persistently alters song, demonstrating a direct link between basal ganglia activity and rapid learning. These results localize the specific cortico-basal ganglia synapses that enable a juvenile songbird to learn to sing and reveal the circuit logic and behavioral timescales of this imitative learning paradigm. ### Competing Interest Statement The authors have declared no competing interest. National Institutes of Health, K99 NS144525 (DCS), F32 MH132152 (DCS), F31 HD098772 (SB), R01 NS099288 (RM), RF1 NS118424 (RM and JP)

Where does learning through imitation happen in the brain?

In juvenile zebra finches, we pinpoint a synaptic locus of song learning in a cortico-basal ganglia circuit and leverage this localization to measure the timescale of consolidation and make birds learn faster! #neuroskyence (1/14)

21.01.2026 16:39 👍 71 🔁 26 💬 5 📌 7

Horrific wildfires in Chile. It is unfortunately becoming much too common and a near annual occurrence for the country as it deals with more extreme summer heat and favorable fire conditions.

20.01.2026 01:59 👍 15 🔁 6 💬 0 📌 0
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Cow Tools!

We have lived alongside cows for nearly 10,000 years.
We breed them and exploit them

It is now, only now, that we have discovered THEY CAN USE TOOLS

Here I describe our study

(paper) www.sciencedirect.com/science/arti... in @currentbiology.bsky.social
with @auersperga.bsky.social

19.01.2026 17:23 👍 1312 🔁 535 💬 26 📌 110
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This book is a wonderful, synthetic and richly illustrated journey through the natural history of the vertebrate brain 🤩

A big thank you to the authors 🙏

"A major theme in the evolution of the telencephalon has been the emergence of novel pathways...

1/2

17.01.2026 09:05 👍 96 🔁 25 💬 2 📌 2

Brilliant overview here of the ongoing debate over dinosaur cognition. In short, it's complicated and evidence is fragmentary.
#neuroethology #neuroskyence #anatomy #brains
@tetzoo.bsky.social @gallinaciega.bsky.social @nomascus.bsky.social

12.01.2026 21:02 👍 29 🔁 10 💬 2 📌 1
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#ornithology
www.nature.com/articles/s41...

09.01.2026 20:47 👍 6 🔁 3 💬 0 📌 0
Client Challenge

Wascher: CORVIDATA: A global dataset of morphology, ecology, sociality, and life-history in Corvidae www.nature.com/articles/s41... #ornithology

09.01.2026 13:47 👍 2 🔁 2 💬 0 📌 0

A data collection mission that began in 2012 is finally released as AVONICHE.

Designed as a companion to AVONET bird trait database and updated to Avilist taxonomy, it’s an Open Access dataset providing updated diets and a detailed breakdown of foraging behaviours used by all bird species.

🪶🌐

08.01.2026 11:22 👍 33 🔁 14 💬 1 📌 0
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New paper out! 🐦📊

We realease AVONICHE, a global dataset with detailed information on the proportional use of 32 foraging niches, combining dietary categories with the behaviours and substrates used to access resources.

Openly access the paper and data in GEB: doi.org/10.1111/geb....

08.01.2026 11:09 👍 94 🔁 46 💬 6 📌 7