The largest group of the dinosaurs-we-call-birds earlier than that large house rock delivered a rain of fireplace adopted by years of darkness have been Enantiornithes. They carried their dinosauriness extra overtly, with enamel of their mouths and claws nonetheless hooking from their wings. They have been a various and extremely profitable group, most of them clearly designed for the type of flying-around, perching-in-trees way of life that the majority yard birds undertake as we speak. Nonetheless … they didn’t make it. Neither did the Hesperornithes, a gaggle of swimming birds that took on types much like fashionable penguins or auks.
The Galliformes survived. So did the ratites, one other group of principally ground-loving birds like ostriches, emus, and different large flightless birds as we speak. And there have been additionally ancestors of the Neoaves, which make up 95% of all of the birds which are nonetheless flapping, working, or swimming as we speak. Although actually, the place all these different birds got here from is more durable to say.
The Neoaves acquired busy after the catastrophe, filling numerous birdy niches, however Galliformes just about had their position down from the start. Take into consideration this lineup: quail, partridge, pheasant, hen, guinea fowl, turkey, peafowl. From medium-small to medium-large, they’re all birds that stalk round forest and grasslands on foot, taking to wing principally as a method of escaping predators. They’re all Galliformes.
One in every of these, the Red Junglefowl (Gallus gallus), higher identified to your native colonel as a hen, is now the commonest chook on the planet. Ultimately rely, there are about 24 billion of them — all however a tiny handful of that are caged up for human consumption.
Testing a Butterball younger white vs. the large roaster chickens at the back of Costco exhibits the under-the-feathers similarity of those species. However throughout the group, chickens and turkeys (Meleagris gallopavo) aren’t significantly carefully associated.
Really, regardless of the distinction in measurement and sleekness, turkeys are carefully associated to pheasants. Consider a turkeys as a pheasant that made its solution to North America, found a spot the place there have been none of these pesky ratites hogging the large chook area of interest, and simply … let itself develop. Due to a tricky disposition, an omnivorous urge for food (turkeys will eat seeds and berries, but additionally bugs and snakes), and a stunning capability to get their heavy our bodies up and out of there when want be, they’ve been one of many extra profitable massive species throughout America for higher than 2 million years. Turkey bones are even one of the widespread finds within the La Brea tar pits, although that exact species, Meleagris californica, is now extinct.
However the evolution of turkeys didn’t cease after they made it to North America and realized they’d discovered a ratite-free paradise. Darwin devoted most of On the Origin of Species to not taking a look at how issues advanced within the wild, however how they responded to human interference. Don’t fear, I’m not going to go on that lengthy, however there are a few factors value pointing.
Beginning round 2,000 years in the past—and possibly a great deal earlier—turkeys have been domesticated in Mexico. And that’s the place your turkey comes from. Mexico. Not directly, each single grocery retailer turkey discovered chilling within the freezer as we speak is descended not from a wild turkey somebody cooped up in New England, however from a gaggle of domesticated birds that Spanish conquistadors took from the Aztecs and shipped again to Europe.
That’s proper. Whether or not the chook in your plate is a Broad Breasted White bred in huge numbers by one of many half-dozen dominant poultry corporations, or some heritage breed hand ate up a small farm that gave it an incredible final meal earlier than humanely calling it to a noble function, the ancestor of that chook was stolen throughout the conquest of Mexico and destruction of North America’s best indigenous empire.
There’s one slight variant on this. Narragansett turkeys are stated to be the results of cross-breeding one in every of these spoils-of-war turkeys with wild kinfolk. So on that one rely, relying on the way you take a look at it, the guilt stage could also be halved.
The turkeys pardoned by President Joe Biden this yr—named Peanut Butter and Jelly—are of the presently most typical Broad Breasted White selection. By weight, they’re about twice as heavy as their wild kinfolk, topping out at round 40 kilos. They’re additionally structurally completely different, with breast bones which are proportionally shorter supporting breast muscle that’s significantly bigger. Breeding the birds usually requires human intervention (sure, “turkey baster” has a couple of which means).
Turkeys could have originated in America, however domesticated turkeys have turn out to be the official birds of celebratory feasts in international locations world wide. These birds taken from the Aztecs turned favorites on the plates of the rich, typically changing their pheasant kinfolk, and have become feast-day favorites in all places. That results in some 620 million turkeys getting slaughtered every year.
Which appears unhappy, however is a technique of claiming that turkeys have gained the evolution sport. They’ve gone from a number of million birds strolling round one continent to numbering within the billions and having a world-wide presence. On a planet the place 96% of all massive animals are both people or the animals they’ve domesticated for consumption, that’s a win. The world is populated by the issues we eat. Every little thing else, from antelope to lions to blue whales, has to squeeze into the remaining 4%.
I’m having my dinosaur with gravy.
A notice to the one in every of you who is making ready to slap me for mixing up clades, households, and orders in laying out these evolutionary connections: slap away. However I already know.