1
What is the main function of feathers?
Flight, insulation, and protection
What gas exchange organ do birds use for breathing?
Lungs with air sacs
What is the main nitrogenous waste in birds
uric acid
What is the bird’s toothless mouth structure called
beak
What covers the body of birds?
feathers
Why do birds have hollow bones?
to reduce body weight for flight
One comparison in human and bird skeleton
bone type, weight……
how many air sacs do birds usually have?
9 air sacs
compare heart rate in humans and birds
birds heart rate is generally higher, resting rates 150-350 beats per minute
what organ do birds have instead of urinary bladder?
cloaca
comment on muscular system of chickens
voice organ
syrinx
how does respiratory system affect thermoregulation
cool down by panting
name advantages of uric acid
body temperature of birds
39 - 49 celsius
In terms of body support what structure makes them stronger
internal struts or trusses
in terms of digestive system name a structure that is for grinding food
gizzard with stones
name some adaptations of muscular system for flying
pectoral muscles, keeled sternum….
comment on sensory system of birds
Excellent vision, light sensing cells, mechanoreceptors, poor sense of smell
comment on nervous system of birds
developed, coordinates flight, movement, behaviour, navigation, mating, nest building
Beaks are adapted for particular roles. List them
feeding, nest building, communication….
name two types of feeding and explain
nidiculous - birds hatch helples, feathers undeveloped
nidifugous - hatch well developed, leave nest immediately
what is Loop of Henle for?
making urine more concentrated
comment on parental care of birds
why do birds need a highly efficient respiratory system?
to supply enough oxygen for high energy needs during flight