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A Bird has been
described as a ‘Feathered Biped’. This description is
apt and precise, and can apply to no other animal.
Birds are
vertebrate warm-blooded animals, i.e. whose temperature
remains more or less constant and independent of the
surrounding temperature. This is in contradiction to
Reptiles, Amphibians and Fishes which are cold-blooded,
i.e. of temperature that changes with the temperature of
their surroundings.
The total number
of bird species known to science as inhabiting the earth
to-day has been estimated as about 8600. If subspecies
or geographical races are taken into account the figure
would rise to nearly 30,000.
Rajaji National
Park has got various species of birds which are divided
familywise as listed below :
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PODICIPEDIDAE
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PHALACROCORACIDAE
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ARDEIDAE
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CICONIIDAE
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ANATIDAE
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ACCIPITRIDAE
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FALCONIDAE
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PHASIANIDAE
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RALLIDAE
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RECURVIROSTIRIDAE
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BURHINDAE
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GLAREOLIDAE
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GHARADRIIDAE
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LARIDAE
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COLUMBIDAE
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PSITTACIDAE
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CULCULIDAE
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STRIGIDAE
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CAPRIMULGIDAE
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APODIDAE
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ALCEDINIDAE
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MERDPIDAE
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CORACIIDAE
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UPUPIDAE
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BUCEROTIDAE
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CPAITONIDAE
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PICIDAE
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PITTIDAE
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ALAUDIDA
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HIRUNDINIDAE
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LANIIDAE
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ORIOLIDAE
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DICRURIDAE
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ARTAMIDAE
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STURNIDAE
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CORVIDAE
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CAMPEPHAGIDAE
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IRENIDAE
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PYCNONOTIDAE
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MUSCICAPIDAE
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MUSCICAPINAE
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SYLVIINAE
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TURDINAE
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CINCLIDAE
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PARIDAE
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SITTIDAE
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CERTHIIDAE
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MOTACILLIDAE
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DICAEIDAE
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NECTARINIIDAE
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ZOSTEROPIDAE
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PLOCEIDAE
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PLOCEINAE
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ESTRILDINAE
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FRINGILLADAE
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EMBERIZIDAE
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