And so tell us about what you found there, the influence potentially of hybridization on how rapidly beak shape can change in this group of birds.

We can think about Daphne Major as, as, as another place to sort of think about this question of hybridization and its role, because if you go, you know, early on to the long-term study on Daphne Major, uh, you had these, uh, species that were generally not hybridizing with each other, right? You had medium ground finches and cactus finches, and they tended not to breed with each other.

But over time, after, uh, a couple of decades, um, the researchers there started to observe the, the different species, uh, breeding with each other.

And, and as you mentioned, um, remarkably, they, they do produce offspring that are, you know, successful and fertile, um, and able to go on and reproduce on their own.

And so there's not, uh, you know, a, a sort of, you know, there's not any consequence that prevents these individuals from breeding with each other.

And so when we think about the group as a whole and this broader question of how can you have such, you know, rapid divergence across, um, you know, across the whole archipelago, um, it's sort of in contrast to this observation that these species can, can hybridize successfully then, right? It seems like if they can, you know, diverge rapidly and they can breed amongst themselves eas- easily, then you might imagine that species barriers would break down really quickly.

So you sequenced, was it, like, 4,000 individuals and found that a big piece of the variation related to beak size and shape lives in just, like, a handful of genes? So just a few genomic regions control all these really cool morphological differences in beak size and shape.

Yeah.