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Class Aves: Birds. Characteristics . Feathers Wings Beak/Bill Oviparous Lightweight skeleton Molting. Penelopedis panini. Feathers. Made of keratin Plumage- covering of feathers on a bird. Function. Form flight surfaces that provide lift and aid steering Prevent excessive heat loss - PowerPoint PPT Presentation
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Class Aves: Birds
Characteristics
•Feathers•Wings•Beak/Bill•Oviparous •Lightweight skeleton•Molting
Penelopedis panini
Feathers
•Made of keratin• Plumage- covering of feathers on a bird
Function
•Form flight surfaces that provide lift and aid steering•Prevent excessive heat loss• Incubation•Courtship•Water proofing
Types of Feathers
•Pennaceous Feathers •Plumulaceous Feathers
Pennaceous Feathers
•Flattened, tightly closed feathers that create aerodynamics surfaces such as those of wings and tails
Plumulaceous Feathers
•Rudimentary shaft to which a wispy tuft of barbs and barbules is attached.
Skeleton
Muscle
• Strongest muscle of most birds are the flight muscles, it has a lot of mitochondria.
Flight
Digestion
Sight
Reproduction
•Monogamous•Polygamous
Nesting Activities
•Clutch-group of eggs and chicks produced by a female.•Altricial-birds that are entirely dependent on their parents upon hatching. •Precocial-alert and lively at hatching.