#6
Did
you know that there are more than 8,600 different types of birds? Again like I
said in my 4th paragraph birds are warm blooded Vertebrates that
have feathers, beaks, and scaled feet.
From last week’s paragraph we learned about the 5 characteristics that
help classify birds which are: lightweight feathers, air-filled bones, powerful
breast muscles, designer wings, and amazing migrators.
1)
Lightweight
Feathers – these feathers protect and insulate from the cold; work like a
fan to allow birds to fly; body feathers for softness; down feathers lie
underneath the other feathers to create another layer of warmth in cold weather
2)
Air-Filled
Bones – these bones are special because they have tiny cross linked bones
inside but also the backbone, breastbone and ribs are all connected forming one
very big bone to support the flight muscles
3)
Powerful
Breast Muscles – the heaviest part of the bird because they have to be able
to lift themselves in flight. If the
breast muscle isn’t large enough, the bird can’t fly
4)
Designer
Wings – each bird has its own set of wings to fit its way of life, some
examples are long pointing, like the Swift
for flying quickly. Ground birds like
the turkey has rounded wings which allows them to fly vertically. Birds of prey have long broad wings for
gliding and circling through the sky
5)
Amazing
Migrators - will trek across country
(up to 300 miles) searching for food