# As seed dispersers:- the seed pass through the birds
intestine unaffected by the digestive juice and out with the waste matter in
due course. They germinate rapidly under favorable conditions and establish
themselves.
#As flower-pollinating agents:-
A large number of birds of diverse families and species are responsible
for the cross-fertilization of flowers, many of them possessing special
adaptations in the structure and mechanism of their tongue and bill for the purpose
of extracting honey. In trying to reach the nectar, the forehead or throat of
the birds comes into contact with the anthers. The ripe golden pollen dust
anthers to the feathers and is transported to the mature stigma of the next
flower visited, which is thus fertilizes.
# As scavengers:- vultures, kites and crows are
invaluable scavengers. They speedily and effectively dispose of carcasses of
cattle and other refuse dumped in the precincts of our villages-notoriously
lacking in any organized system of sanitation- that would otherwise putrefy and
befoul the air and become veritable culture beds of disease.
#As destroyers
of insect pests:- a large proportion of the normal food of birds consists of
insects, including many that are in the highest degree injurious to man and his
concerns.
