light, toothless beak large “keeled” sternum gizzard instead of teeth tail bones lost/fused into...
Post on 19-Dec-2015
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Light,Toothlessbeak
Large “keeled”sternum
Gizzard instead of teeth
Tail bones lost/fusedInto pygostyle
Center of gravity
Powering flight
Static soaring
Light or dark meat?
It’s all about flight physiology!
Powering flight muscles
So unidirectional flowWhat’s the advantage??
Cerebellum
Bird Brain
Coordinating flight
AltricialPrecocial
Sex determined by sex chromosomes, not temperature
Attracting a mate
Song from Syrinx“double flute”
MigrationShearwater 40,000 miles/year
If they were burning gasoline instead of fat, they'd be getting about 720,000 miles to the gallon
Blackpoll Warbler15 g ----2 for one stamp 80-90 hours nonstop
Migrate Canada to South AmericaNeotropical migrant Red + yellow =12000 miles