NATURAL FLIERS-BIRDS
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Word galaxy
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1.
Feather
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11. Shredder
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2.
National
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12. Strainer
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3.
Chisel
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13. Scratching
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4.
Wading
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14. Grasping
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5.
Perching
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15. Probe
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6.
Contour
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16. Ostrich
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7.
Flight
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17. Environment
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8.
cracker
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18. Keratin
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9.
sparrow
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19. Beaks
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10.
webbed
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20. curved
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WINGS & FEATHERS
Q-1 .FILL IN THE BLANKS:-
1 .
Ostrich and Emus
are flightless birds.
2 The shaft of a
feather is made up of a very hard material called keratin
3 Pointed
wings indicate a fast flier
. 4 Feathers are
held together in place by a hollow tube called Shaft or Rachis
5 The three
types of feathers are-
Body
feathers
down feathers
flight feathers
6. Short and broad winged birds can fly low.
Q. ANSWER THE FOLLOWING
QUESTIONS :-
1. What is keratin?
Ans. Feathers are
held together in place by a hollow tube called the shaft or rachis. The shaft
is made of a very hard material called keratin.
2.
Explain the three types of
feathers of birds.
Ans. Contour (body) feathers:
Ø These are small feathers which covers the wings,
the body and the tail.
Ø It gives a
sleek shape to the body which helps in flying.
Down feathers:
Ø These feathers are located underneath the contour
feathers.
Ø It protects
the skin and provides warmth to the body.
Flight feathers:
Ø These are special contour feathers, located on the
wings.
Ø They help the bird in landing, flying and lifting.
Q3. What are the uses of beaks for a bird?
Ans. Birds use the beaks for
gathering food, eating, feeding their young ones, preening, drinking water,
collecting material for nests, attacking their enemies and grooming.
Q4)
Briefly describe
each type of beak and its function. Give two examples of birds for each type of
beak.
A)
Cracker:
1)
Seed eaters
have hard, short, thick and cone shaped beak called Crackers.
2)
Perfect for
cracking or breaking open seed.
3)
Sparrow,
pigeons.
B) Shredder:-
1) Birds of prey have sharp and curved beaks called shredders
2) These beaks help the bird of prey to tear the flesh of small
sized animals
3) Eagle, Hawks
C) Probe:-
1) Nectar drinking birds have long probing beaks called Probes
2) These beaks work like straws and reach deep into the flowers
and sip nectar.
3) Humming bird, Sunbird
D) Chisel:-
1) Wood boring birds have beaks that are shaped like chisels with
a sharp cutting edge.
2) These beaks bore holes into hard tree trunks helping the birds
to find insects
3)
Eg. Woodpecker, Hoopoe
E) Strainer:-
1)
Water birds have broad and flat beaks called Strainers.
2)
These beaks act as strainers and help the birds to catch insects, small fishes,
worms and plants from the water.
3) Duck, Geese
Match the following
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. 1 Scratching
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A Two toes pointing in
forward direction
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2 Grasping
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B Sharp claws to scratch or dig soil
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3 Climbing
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C Sharp and curved
claws to grasp its prey
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4 Perching
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D long back toe
helps to grab a perch tightly balance
easily to sit on a branch
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Ans (1-B), (2-C), (3-A), (4-D)
Q-
GIVE REASONS:
1. Shape of the
beaks differs in every bird.
Ans. Birds have no teeth.
Therefore the shape of their beaks depends on the type of food they eat and
their lifestyle.
2. The toes are arranged differently in different
birds.
Ans: Birds have well adapted legs and feet
according to the habitat. The legs are covered in scales and toes equipped with
claws, according to the species and its behaviour.
3.
Animals are
different from birds.
Ans. The birds have beaks, wings and feathers which
makes them different from animals.
Q4.What are flightless birds?
Or
Some birds are known as
flightless birds. Give reason.
Ans. All the
birds show wings and feathers but few of them are not capable of flying, such
birds are called as flightless birds. For eg: penguins, ostriches, emus, etc.
