|
Humans speak when they are happy, they speak
when they are sad. They speak when they are angry, and they
speak when they see a thing of beauty. They try to speak even
when they have toothaches, and often they speak even when they
have nothing to say. Well, songbirds are quite the same.
They sing to tell
their winged neighbours and strangers that the branch on which
they are sitting, or the shrub that grows next to the school,
is THEIR home. Or they may sing to warn other birds that an
enemy is near. During the mating season, male birds sing with
great feeling because they want to attract female birds. All
in all, the songs range from simple to a more complex range of
sounds.
The sparrow,
the parrot, the thrush, the koel and even the crows, are
songbirds. Nearly half the bird population in the world
consists of songbirds. There are about 4,000 species of
songbirds which are grouped under various families, ranging
between 35 to 55. They are called passerine birds; in other
words, perching birds. Many of these songbirds are birds that
are kept in cages as you may have seen. Songbirds get their
ability to sing because of a highly developed and powerful
vocal organ, which is called the syrinx or the song
box.
Some of these birds can be very human. For
example, some whistler birds cannot stand any hint of a
challenge. Earlier, they would try to drown the sound of
thunder with their shouts. These days they try to compete with
the high-noise, high-flying aircraft.
Ornithologists
say they seem to practice their songs in some kind of schools
with elders guiding them
along.
|
|
From
the way they sing we might be tempted to think that these
songbirds are bright and beautiful. But, no, these birds are
often small, dull-coloured creatures. And they lead solitary
lives on forest floors or open grassland. Looking at the dull
appearance of the songbird, it is difficult to imagine that it
could even sing!
In fact, male birds with beautifully coloured
feathers do not sing; their bright plumage is enough to
attract the opposite, or to give a clear signal to other birds
about its claim to home and territory. Similarly, there is a
reason for the dull appearance of songbirds. It helps hide
them from their enemies.
The birdsongs are not
always pleasing too. In fact, sometimes they are downright
irritating. An American who studied the red-eyed vireo or
preacher bird discovered that it made the same sound 22,197
times in a single day! As the well known Indian ornithologist
Dr. Salim Ali has remarked, hearing the melodious sound of the
koel can also prove hard on the ears!
Usually it is the
male who sings, but sometimes the female joins if only to
strengthen the bond with her mate. Family
is serious business for these birds.
|