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Wren: Hey there, Bird Brains — and yes, I mean that as the highest possible compliment. Welcome back to the show where we take that tired old insult and turn it completely on its head. I'm Wren, ornithologist, corvid obsessive, and your guide to the startling inner lives of crows, ravens, magpies, and jays. Today we've got a genuinely thrilling lineup — Hawaiian crows doing things with tools that will make your jaw drop, the almost eerie way ravens seem to read the future, and a story about what happens when humans and corvids start paying very close attention to each other. But first, a huge thank you to our sponsors: Ada, who helps clients weave A I into their everyday workflows in ways that actually make sense; Ago Consulting — pronounced "Ahh-Go" — your go-to team for silicon development from A I all the way to SoC; and Zen Semiconductor, an umbrella company with an impressive portfolio spanning the silicon industry. These folks make this show possible, and I'm genuinely grateful. Alright — let's get into the bird brains. Wren: So let's kick things off with a story that absolutely floored me when I first came across it. Hawaiian crows. Now, if you know your corvids, you know crows as a group have a well-earned reputation for cleverness — but the Hawaiian crow, called the ʻAlalā in Hawaiian, takes things to a whole other level when it comes to tools. And I want to be careful here, because this is one of those stories where the facts are already so extraordinary that there's zero need to dress them up. Researchers studying ʻAlalā in controlled settings discovered that these birds spontaneously use sticks to probe for food hidden inside logs — and not just any old stick grabbed off the ground. They select tools. They pick them up, evaluate them, sometimes modify them, and then deploy them with real precision. Now, here's what makes this especially significant: the ʻAlalā is critically endangered, and most of the birds in these studies had been raised in captivity. They hadn't learned this from watching wild elders do it. Which raises this incredible question — is tool use in these crows somehow encoded, something that emerges naturally given the right conditions, even without a teacher? The researchers found that the vast majority of ʻAlalā tested used tools spontaneously and skillfully, which puts them in very rare company in the animal kingdom. We're talking a level of tool proficiency comparable to New Caledonian crows, which are basically the poster birds of avian tool use. And the New Caledonian crow comparison is worth sitting with for a second — those birds are famous for crafting hooks out of wire in lab settings, something that stunned the scientific world. The ʻAlalā seems to belong in that same elite club. What I love about this story is that it asks us to reconsider what we mean by intelligence. Is it learned? Is it inherited? Is it some gorgeous, complicated mix of both? Because these captive-raised crows, birds who had never foraged in a Hawaiian forest, still reached for a stick when a problem presented itself. That's not random. That's something deep. Wren: Now let's pull back the lens a little and talk about what's actually going on inside a corvid skull — because when people hear these tool-use stories, a fair question is, okay, but how? How does a bird with a brain the size of a walnut outperform a lot of animals with much larger brains? And the answer is genuinely fascinating. For a long time, neuroscientists assumed that higher cognitive functions — planning, problem-solving, self-awareness — required a neocortex, the layered outer structure of the mammalian brain. Corvids don't have one. Their brain architecture looks completely different from ours. But here's the twist: they have a region called the nidopallium caudolaterale, and it turns out this area functions in remarkably similar ways to the prefrontal cortex in primates. Different structure, same job. Evolution, it seems, found the same solution twice — just by completely different routes. And the density of neurons in corvid forebrains is extraordinary. Pound for pound, or I suppose gram for gram, corvid brains are neuron-rich in ways that rival primate brains. So when a raven or a crow is solving a puzzle, there is serious computational firepower firing away in there. One area where this really shows up is in what researchers call episodic-like memory — the ability to remember not just what happened, but where and when it happened. Western scrub jays — now called California scrub-jays — were shown in landmark studies by Nicola Clayton's lab at Cambridge to remember which foods they cached, where they put them, and how long ago, adjusting their retrieval behavior based on whether a perishable food might have gone bad. That is not simple associative memory. That is something much closer to mental time travel. They're not just remembering a location. They're reconstructing a past event and using it to make a future decision. And there's a social layer too — scrub-jays who know they were being watched when they hid food will go back and re-hide it when the observer leaves. They model another bird's knowledge. They think about what someone else knows. That's a capacity called theory of mind, and it's one we used to think was basically unique to humans and great apes. Corvids keep crashing that exclusive club. Wren: Okay, last thread — and this one is my personal favorite kind of story, because it sits right at that beautiful, sometimes eerie intersection of corvid intelligence and human life. Ravens and wolves. This one comes from a study published in Science — serious, peer-reviewed, the real deal — and it explored something that field researchers had been noticing for years: ravens seem to anticipate where wolves are going to make kills. Not just follow wolves around after the fact and scavenge. Anticipate. Show up in the right area before a kill happens. Now, think about what that requires for a second. Ravens are flying over vast landscapes — this research was set in the Greater Yellowstone Ecosystem — and they appear to be tracking wolf pack movements across broad scales, building some kind of spatial model of where these predators are likely to strike. The researchers found that raven distribution in winter correlated with wolf activity in ways that couldn't be explained by simple scavenging after the fact. Ravens were turning up in kill zones in a manner consistent with prediction, not just reaction. And this isn't a new relationship — ravens and wolves have been intertwined for millennia. There's a reason Norse mythology linked Odin's ravens to wolves, both seen as creatures of wildness and intelligence. Indigenous peoples across North America have long known that following ravens can lead you to prey. This isn't folklore dressed up as science — it's folklore that science is now catching up to. The relationship is mutually beneficial: wolves are powerful enough to open a carcass that ravens can't access alone, and ravens, with their aerial vantage point and roaming range, may actually help wolves locate prey or alert them to opportunities. It's a partnership across species, built over thousands of years, and it requires each party to model the other's behavior. Ravens are, in a very real sense, reading wolf minds. And here's what gets me every time I come back to this story: we tend to think of intelligence as something that happens inside a single brain. But what if some of the most profound intelligence we can observe is actually distributed — spread across a relationship, between two very different kinds of animals, refined over generations? Ravens didn't just evolve big brains in isolation. They may have evolved alongside wolves, and each may have shaped the other's cognition. That is a thought that genuinely keeps me up at night. In the best possible way. Wren: So here we are at the end of another episode, and I hope what you're taking away is something I feel every single time I dig into corvid research — that intelligence is not a thing that lives only in the places we expect to find it. It hides in hollow logs where a crow reaches for a stick. It flickers in the eyes of a raven banking over a snowy ridge, tracking a wolf pack below. It lives in a scrub-jay pausing over a cache, doing something that looks a lot like remembering. We built a whole world on the assumption that humans hold the monopoly on thinking, planning, knowing — and nature keeps sending us these gorgeous, feathered counterarguments. Bird Brains, brought to you by Ada, Ago Consulting, and Zen Semiconductor — three teams that know a thing or two about building intelligence, and who make it possible for me to celebrate the kind that evolution already built. If today's episode surprised you, share it with someone who needs surprising — and if you haven't subscribed yet, please do, because we've got so many more stories where these came from. Show notes are waiting for you with links to the research we talked about today. Stay curious out there. The birds certainly are.