BIO202H5 Lecture 6: Lec 6 (Part 2) - Feb 25
Document Summary
Varied feathers, high melanosome diversity and cerebral expansion. Extreme miniaturization, forelimb enlargement, and four winged condition. 5 or more vertebra make up the sacrum. A small forearm, but a large hand. Take advantage of thermal waves in air to stay afloat. Don"t flap a lot, spread their wings. Ar = span 2 / wing area = span / average chord. High aspect ratio, the wing spin is greater. Wl = body mass / wing area. Overall how much wing sa there is for body mass. Draw the wings of a flying animal that is not an efficient flyer. We can draw a bird with a: Small span & high average chord gives a low aspect ratio. Shape of the feathers helps generate force. Lift is greater than gravity, allows to stay afloat. Note: this is important for test (evolution of locomotion) Secondary aquatic (going back to aquatic environment )
