What is Bird-flu?

The changes contracting bird flu from a properly cooked (above 100^(@)C ) chicken and egg are

What is the utility of the presence of more muscles in birds.

What is the principal nitrogenous waste product in (i) fish and (ii) Birds?

A man standing in the midst of a field observes, a flying bird in his north at an angle of elevation of 30^@ and after 2.5 minutes he observes the bird in his south at an angle of elevation of 60^@ . If the bird flies in a straight line all along at a height of 60sqrt3 metres, what is its speed?

What is common in birds and mammals?

What is the national animal and bird of India

What is the sound producing organ of birds?

What is the main excretory product in bird?

What is the number of air sac present in bird?

What provide shelter to birds, squirel, bat, monkeys at night?