OH WHAT THE EVERLOVING FUCK
I WILL NEVER BE ABLE TO SLEEP AGAIN WITHOUT HAVING NIGHTMARES OF THESE HORRIBLE MONSTERS
(Random ornithologist attack!)
Hi there! Actually, the reason these baby finches have such weird mouths is pretty cool - vidua finches are a family of bird that exclusively lay their eggs in the nests of estrildid finches. To defend themselves, estrildid finches have evolved these mouth patterns so that the host parents can check the gaps of their babies and distinguish which ones are actually their own, and which belong to the vidua finches (although, since each species of vidua finch specializes in just one species of estrildid finch, their gape patterns tend to look very similar).
Ohh, that’s awesome! Thanks! I think I’m still going to have nightmares, though…
Reblog this if you want a mini fanfiction in your ask based on your url or something I found on the first few pages of your blog.
(99% possibility The writing will be crap.)
(Anon must be on.)
Everyone who reblogs this will get one.
sylph0fl1ght said: How old do you think ichthyosaurs are? I'm really surprised they appeared so soon after the Permian extinction and predate the dinosaurs by well over 10 million years, like how does something even evolve into an aquatic animal that fast?
In my quick search for answers, it seems possible to me that the ancestors to ichthyosaurs were already semi-aquatic during the very late Permian, but since there haven’t really been any transitional forms found between reptilian land-dwelling ancestors and ichthyosaurs yet, no one can really be sure. And ~10 million years is how long it took for the ancestral line from Pakicetus to evolve into the families that make up the modern whale now.
To add to this, Motaniet alii (2014) implied that viviparity (live birth) was already present in the terrestrial ancestors of ichthyosaurs after finding a fossilised Chaohusaurus giving birth to pups head first, the opposite of all marine amniotes (including later ichthyosaurs).
If ichthyosaurs did originate in the Permian and were already viviparous, I’d speculate that giving birth to live young may have been one factor in how they survived the extinction.
I did a report on this last year! The fossil record around the Permian extinction is pretty scant, and it’s thought that they did indeed adapt to marine life very soon after the extinction. Remember, almost all ocean life had just died out, so there were lots of open niches. Anyway, the oldest known ichthyosaur fossil has been dated at only 3 Mya after the P-Tr extinction. I uploaded the report here, and here is the webpage of the Ichthyosaur Master, Ryosuke Motani (although there’s not too much about the origin of the clade there due to a lack of fossils; it’s more about physiology and phylogenetics within Ichthyosauria). Another great ichthyosaur resource is that Sander 2000 paper in the report’s bibliography, it’s pretty much a survey of all ichthyosaur knowledge up to 2000.
As promised, here are some pictures of Lyalya’s first walk outside! Look at the bushy little squirrel tail :D the sandpit was her favorite spot! She was extremely excited and threw sand all over the place
this is a fucking squirrel. this is a fucking squirrel with a cat’s head. who is responsible for this
madnessbreed is this
Well here’s an unbelievably magnificent bird with a back like the light filtering through trees to a leafy forest ground or a sunrise gleaming off a gently flowing stream. BIRD. WAI U SO DIVINE
Apparently sandgrouses are completely unrelated to regular grouses. They even have their own order!
"Eel transparent without the blood and organs!! " (Found in Indonesia)
Wow! Very cool! You should put up the video as well!
It’s a Venus’ Girdle! A kind of Comb Jelly that’s completely different from other Comb Jellies.
I know this might seem far-fetched but this really is an eel! This is the leptocephalus of a moray eel. The pelagic stage of their life where they are basically a transparent strand with a tiny head! They still look alot like a venus’ girdle though.