So, what foot shapes are possible w modern birds. Most common one we see are feet of perching birds, like ravens!https://twitter.com/Lisavipes/status/818975072798937088 …
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RealScientists Retweeted Dr. Lisa Buckley 🦃 🐾 🐾
So, what foot shapes are possible w modern birds. Most common one we see are feet of perching birds, like ravens!https://twitter.com/Lisavipes/status/818975072798937088 …
RealScientists added,
See how long hallux (reverse toe) is? And how closely bunched the forward toes are? That's a common foot shape in birds have perching feet.
Bird feet that have three toes pointing forward and one pointing back are called anisodactyl feet. Toes are numbered from inside to outside.
Look at your feet. See your big toe? That's digit 1. If you were an anisodactyl bird, your big toe would hang off your heel, straight back.
So, all shorebirds, perching birds, hawks, eagles, wading birds...they all have anisodactyl feet. There are other toe arrangements!
Let's look at parrots, woodpeckers, roadrunners. They have two toes pointing forward, and two toes pointing back. That's a zygodactyl foot.pic.twitter.com/KpY9PnvXvJ
Now owls...owls are a funky bird. Check out this owl's foot. There's a lot of flexibility in how owls move their toes.pic.twitter.com/EHxiwOg3rs
Inner toe of owls can be positioned so that foot looks both zygodactyl (3-1) or anisodactyl (2-2) There are Cretaceous zygodactyl tracks!
Meet Shandongornipes, a zygodactyl Early Cretaceous bird track from China! http://scienceblogs.com/grrlscientist/2007/03/30/ancient-roadrunnerlike-bird-fr/ …pic.twitter.com/ReMDOAdGRw
Now this tweet had better work: here are totipalmate feet!pic.twitter.com/I2Knkc29kA
Please tell me that's real
I think that's just the animation: I don't know if BfBs hop!
I will choose to believe they do unless proven otherwise 
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