[Date Prev][Date Next][Thread Prev][Thread Next][Date Index][Thread Index][Subject Index][Author Index]
soggy "down" maladaptive?
At 04:47 PM 27/04/01 +0000, Ken Kinman wrote:
> Another argument put forward by Feduccia and others is that downy
> feathers would be maladaptive as insulation (soggy feathers result in
> hypothermia at night?) unless it was only on the young and a parent could
> shield the young from getting its down wet.
> How does one best argue against the "downy feathers get soggy and are
> thus maladaptive" argument?
Easy. Ever seen a duckling? [imagine a resouding "yes"]. Ever seen one swimming?
[repeat previous imagining]. What are ducklings covered in? Or most water birds
that swim soon after hatching for that matter (Moor hens, etc).
Dann Pigdon Australian Dinosaurs:
GIS Archaeologist http://dannsdinosaurs.terrashare.com
Melbourne, Australia http://www.alphalink.com.au/~dannj/