re: chowser maria lorraine Nov 27, 2007 All the creme fraiche I've ever used and tasted was as thick (if not thicker) as sour cream and not at all soupy. The brand... All the creme fraiche I've ever used and tasted was as thick (if not thicker) as sour cream and not at all soupy. The brand I like is Bellwether Farms. Very thick.
Class Aves - Birds. 1  Waterproof skin covered in feathers. 2  Endothermic, warm blooded. 3  Hard shelled eggs that are waterproof (cleidoic - closed egg) 4  Beak or bill rather than teeth. 5  Bipedal (walk on two legs only) 6  Forelimbs developed into wings.
Quick Answer. Birds and mammals are both warm-blooded animals with separate sexes determined by genetics, spinal cords, four-chambered hearts, four limbs and well-developed bony skeletons. Both groups include species that can fly and those that cannot, and both groups include species that lay eggs.