[Date Prev][Date Next][Thread Prev][Thread Next][Date Index][Thread Index][Subject Index][Author Index]

Re: Pterosaur size (Was: Great in the air, not so good underwater)

Quoting Michael Habib <mhabib5@jhmi.edu>:

At the other extreme, some birds have jettisoned hind limb function for particular selective flight advantages; because the hind limbs are the primary launch power in birds, these species often need gravity assistance to launch. Such taxa (like Phaethon, Fregata, Apus, and Chordeiles) are clumsy on the ground but this has nothing to do with scaling (in fact, Apus and Chordeiles are quite small).

Good point, and let's not forget hummingbirds, the smallest birds of all. Do they ever walk at all?

Nick Pharris
Department of Linguistics
University of Michigan

"Creativity is the sudden cessation of stupidity."
    --Edwin H. Land