1. Eat like a bird? Fly like a bird? Sing like a bird?

2. Bird Characteristics Most closely resemble the reptiles (scaly feet)
Feathers better advantage than skin for wings
Can be replaced
Amniotic eggs
Large Pectoral/Breast muscles (30% of weight)
Flight skeleton
Thin and hollow
Fused bones (hand of humans/collarbones)
Keelbone

3. Bird Characteristics cont.
Beak structure indicitive of food source (lack teeth)
Crop and Gizzard
Very efficient respiration
Efficient circulation (4 chambered heart)
Feed young crop milk

5. EXTERNAL NARES
CERE
NICTITATING MEMBRANE
TYMPANIC MEMBRANE
inside head
SCALY SKIN on feet CLAWS

6. EYES BIG for size of head See in COLOR
Kestral Image from:
EYES
BIG for size of head See in COLOR
Eyes on front of face- gives depth perception
Seen in predators
Eyes on sides of head-
Gives wide range of vision
Seen in prey

10. Bird Lung/Respiration