aviary respiratory system and feathers mr. blackwood

Aviary Respiratory System and

FeathersMr. Blackwood

Introduction

• Respiratory system

• Feathers

Respiratory SystemDefine the System

• Respiratory system delivers oxygen from the air to the tissue and removes carbon dioxide.

• Plays role in regulating body temperature

• Different form other vertebrates

• Cycles inspiration and expiration

Birds Breathe Better

• More efficient than mammals

• Transfer more oxygen with each breath

• Con - transfer toxins more effectively

Basics

• Birds have lungs

• Air sacs

• Air sacs of birds extend into bone in shoulder and elbow, thigh bone, back bone, and skull

Unidirectional Flow

• Most mammals have BIDIRECTIONAL flow - moving back and forth and into and out of the lungs– Air coming into mammals lungs is mixed with old

air - – less oxygen

• Birds have UNIDIRECTIONAL flow– Fresh air and has high oxygen content

More

• Air is moved into and out of respiratory system with pressure changes in air sacs

• Muscles in chest cause sternum to to push outward

• Causes air to enter air sacs

• Other muscles contract to push air out

Visual Respiration

• cool link

Feathers

• Feathers• Epidermal growths

that form an outer covering on birds

What do they do?

• Aid in flight, thermal insulation, waterproofing, camouflage

• Protection form weather• Balance• Buoyancy for swimming• Protect from water

Types of Feathers

• Tail feather - balanced left and right of center

• Flight feathers have a narrower and wider side

• Semiplume and downy feathers are good for warmth

• Filoplume are found around tail and flight feathers used for sensing feather maintenance

• All feathers have similar parts

Anatomy of a Feather

• 1 Vane• 2 Rachis• 3 Barb• 4 Afterfeather• 5 Calamus, Hollow

shaft

Structure

• Hooklets and barbs add structure and slight rigidity to flight and tail feathers

• Downy Feathers are barbed but not hooked

Uses by Humans

• Since feathers trap heat well

• Used in bedding or mattresses, pillows, and blankets

• Coats and sleeping bags

• Arrows and fishing lures