Posted on 12/13/2015 11:06:28 AM PST by JimSEA
New research led by the American Museum of Natural History reveals that the evolution of modern birds was greatly shaped by the history of our planet's geography and climate. The DNA-based work, published today in the journal Science Advances, finds that birds arose in what is now South America around 90 million years ago, and radiated extensively around the time of the Cretaceous-Paleogene extinction event that killed off the non-avian dinosaurs. The new research suggests that birds in South America survived this event and then started moving to other parts of the world via multiple land bridges while diversifying during periods of global cooling.
"Modern birds are the most diverse group of terrestrial vertebrates in terms of species richness and global distribution, but we still don't fully understand their large-scale evolutionary history," said Joel Cracraft, a curator in the Museum's Department of Ornithology and co-author of the paper. "It's a difficult problem to solve because we have very large gaps in the fossil record. This is the first quantitative analysis estimating where birds might have arisen, based on the best phylogenetic hypothesis that we have today."
(Excerpt) Read more at sciencedaily.com ...
“The new research suggests that birds in South America survived this event and then started moving to other parts of the world via multiple land bridges while diversifying during... “
Which makes sense.
Before they developed wings, they had to walk across the land bridges. This also led to the development of the first bird hostels.
Isn't that what they say all species did? Like the giraffes needed long necks to eat the top leaves, while nothing else needed to do the same?
or so the theory goes - get back to me when they find the home movies proving their theory ...
“while diversifying during periods of global cooling.”
I thought humans caused climate change. Silly me.
L
Sandhill Cranes sound like what I think many dinosaurs may have sounded like. The guy buying te house next door to me said “What the hell was that?”
https://www.youtube.com/watch?v=0I-50QxhLwA
Thanks, I never heard their call before.
They’re very loud too. Their calls carry for miles.
And your post led me to read your link. Fascinating little critters. My wife plants a couple of things just to attract them.
Thanks JimSEA.
God made them individually and there is no science that can convince me otherwise........
This as well as all other info on hummers is theory.............
When you look at the diversity of birds, from penguins to condors to hummingbirds, each has their own unique characteristic that completely separates each from the other.
Evolutionists tell us that all life began from a primordial soup but they can't tell us how and why there are literally millions of different species of bugs, birds, worms, animals, plants, microbes and germs that came out of that mud.............
If evolution occurred, it should have been in a singular direction but it didn't.
God created every living species of life on this planet.........
Just for the record, “evolutionists” have nothing to say about the origin of life, just about the progression of species.
We have Fuchsias of all kinds here in the Pacific Northwest and the hummies go crazy over them. We hang a couple on our porch and when we BBQ they are right in front of us. Plus they are beautiful flowers.
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