| -Generalities -Social organization
-Social behavior
-Vocalization
| WHG are arboreal
and maintain a definite territory, which
is defended by loud territorial songs (Marler,
1968). Singing announces the occupation
of a specific area of the forest by a
mated pair and functions as a distance
maintaining signal. |
Territorial
call
|
Territory The
territory of the WHG irrespective of its group
size or composition usually varies between 15-30ha.
The overlapping zone usually varies from 50-100m.
Except for foraging and feeding in these
overlapping zones, all gibbon families very
rarely move in these zones. Aggression and
conflicts between the neighboring groups take
place generally in these areas where they forage
for food (Alfred and Sati, 1986, Islam and Feeroz,
1992, SVAA, 2007).
Their
regular feeding bouts, their social behavior and
places from where their territory marking calls
are announced are always well within the
territory. Each territory has its abundant fruit
trees (the fruiting trees are highly correlated
to the territory size), resting or roosting trees
as well as shade and sun basking trees.
Sun basking
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