Birds are endothermic vertebrates characterized by feathers, beaked jaws, laying hard-shelled eggs, and a high metabolic rate. There are around 8,700-9,600 living bird species worldwide that vary greatly in size. Birds are classified in the kingdom Animalia, phylum Chordata, and class Aves. Common types of birds include doves, flamingos, and eagles, which are found in various habitats and have distinguishing physical traits. Birds undertake seasonal migrations for breeding and survival, moving between northern and southern latitudes. Migratory birds such as swans, geese, and ducks help control pests and dispose of dead animals, benefiting human populations.

1. FIELD STUDY OF
BIRDS

2. BIRDS
 Birds are also known as AVES .
 They are a group of endothermic vertebrates.
 They are characterised by feathers , beaked jaws , laying of hard
shelled eggs , high metabolic rate , four chambered heart and a
strong and light weight skeleton.
 The study of birds is known as ornithology which is a branch of
zoology.

3. SCIENTIFIC CLASSIFICATION
KINGDOM ANIMALIA
PHYLUM CHORDATA
CLASS AVES
The size of bird ranges from 2 inches to 9 feet.
There are around 8700 to 9600 living species of
birds.
Birds live all over the world in all climates.

4. TYPES OF BIRDS
Different species
• Dove
• Flamingo
• Eagles
Places where they are found
&characteristics
• Found throughout the world .
• Longer tail.
• Found in African countries , florida
etc.
• Pink bodied birds with a unique
beak.
• Found near marshes and
coastlines.
• They have large and broad wings
and tail.

5. TYPES OF BIRDS(CONTINUED)
Different species
• Catbirds
• Owls
Places where they are found
&characteristics
• Found in Mexico .
• They are grey in colour and
imitate the sounds of other birds
• Found in Antartica and remote
islands.
• They are awake at night and
hunt insects.

6. BIRD MIGRATION
• Migration – regular seasonal movements of birds for breeding and
survival.
• It occurs mainly in the northern hemisphere.
• They fly through the Mediterranean sea or Caribbean sea.
• The migratory birds include:
Swans
Geese
Ducks
Humming birds

7. TYPES OF BIRD MIGRATION
Latitudinal - movement of birds from north to south direction.
Longitudinal – movement of birds from east to west direction.
Partial - from the northern part of U.S.A to southern part of U.S.A .
Seasonal-from north to south during summer.
Altitudinal- occurs in mountainous regions.

8. ADVANTAGES OF BIRDS
• Insect eating birds such as mosquitoes , beetles etc provide human
with pest control.
• Bird species such as finches and sparrows eat weed seeds to control
the unwanted plants.
• Scavenging birds such as vultures , crows and eagles help to dispose
of the dead animals.
• Birds like humming birds, beetles help in pollination by the attraction
of bright coloured flowers.