Birds Flashcards
Class Aves
Birds
Ornithology
the study of Birds
_______ are unique to only Birds
Feathers
Feathers
Plumage
Functions of Feathers
- warmth
- shed water
- camouflage and mating
Feather Facts
- shed regularly
- can come in different variations from juvenile to adult
- breeding and non-breeding, winter and summer
Birds Body Temperature
- warm blooded
- Endothermic-can generate internal body heat
- Homeothermic-can maintain body heat steadily
- High around 110-112°F
Reproduction of Birds
- oviparous
- internal fertilization
- cloaca
females: build nest, lay eggs, tends to both - group of eggs: Clutch
males: defend territory
Bird Births
- Altricial-naked, blind, helpless
- Precocial-feathered, sighted, walk and eat on own
Altricial birth
naked, blind, helpless
Precocial birth
feathered, sighted, walk and eat on own
Vocalization of Birds
- Songs-produced by males to attract mates and define/defend territory
- Call-produced by all birds; short vocalizations used for a variety of reasons
Flying Birds
Carinates
-keel on sternum: flat boney plate that attaches their powerful flight muscles
Flightless Birds
Ratites
- no keel on sternum
ex: Ostrich, Cassowary, Kiwi
Obligate Migration
migration is genetically programmed (migrate no matter what)
Irregular/Nomadic Migration
only migrate based on food source (will stay of there is enough food
Birds Respiration/Bones
- air sacs (secondary airways) to power flight
- most have hollow spaces in bones
Bird Feet
- either 3/4 toes
- defense (claws)
- getting food
- walking
Bird Beak
- eat
- defense
- care for feathers
- build nests
Bird Wings and Tails
- short rounded: flapping to fly (ducks)
- long broad: soaring flying (vulture)
- skinny pointed: darting type flying (sparrow)