How did these creatures so called birds come into existence ? Why are they called as birds ? Are they evolved from the Jurassic Era !!

A picture is worth a thousand words… https://evolution.berkeley.edu/evolibrary/article/evograms_06

[image] mamestraconfigurata: what does K-Pg stand for? I’ve always read K-T, but I don’t keep up on changes. The Tertiary is no longer accepted as a bona fide period and has been replaced by the Paleogene and Neogene, so K-Pa now stands for the same boundary that K-T used to refer to. It’s li…

[image] mamestraconfigurata: I’ve been thinking about starlings and house sparrows over the years. Both are introduced to North America (albeit a short time ago in geological terms), and both have spread widely. As far as I know they are morphologically the same as when they were introduced. Has…

odole: use of genetics and… taxonomy. You have to have some criteria for assessing relationships, and when it comes to nuance, particularly of extinct species or cryptic species, genetics is about as nuanced as you can get. Behavior is often considered as well in extant species. What would…

[image] elsemikkelsen: (Palaeognaths, Galloanserae, Strisores, Columbaves, Gruiformes, and a group including all other birds) Wait – the modern-day Order Gruiformes had already formed by then?

I wouldn’t feel comfortable making any confident statements since the relationships of the deep branches and their timing is still a bit unresolved in birds, but so far that’s what the data suggests - for example the Prum et al. 2015 phylogeny puts the divergence of Gruiformes from their sister grou…

[image] earthknight: What would you propose people use instead of genetics, taxonomy, and behavior? https://www.ncbi.nlm.nih.gov/books/NBK19932/

And?.. Did you read that report? First off, it doesn’t have anything to with the issue of species classification or anything else related to that, it has specifically to do with health. Setting that rather major issue aside, it doesn’t propose or even hint at a change to using genetics to sort ou…

Bird Evolution ..?

Nature Talk

lappelbaum July 17, 2021, 6:01pm 70

I’ve never seen any kind of partridge before, nor pheasant, grouse, ptarmigan, or prairie-chicken. There aren’t any where I live.

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Bird Evolution ..?

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