পাখির কলোনি সংরক্ষন | Conservation of Bird Colony

Titile: পাখির কলোনি সংরক্ষন | Conservation of Bird Colony

Various species of wildlife are found in our nature.
Birds are the most common among the diverse wildlife.
Our nature becomes lively with the presence of these colorful birds of various shapes and sizes.
Among the diverse birds in our country, some species usually live in groups.
From protecting themselves, building nests during breeding, laying eggs, and raising chicks, these birds show amazing social behavior in all activities.
In our country, colonial birds include different species of Herons, Cormorants, Asian Openbills, and Lesser Adjutants, and other water birds.
These birds usually build their colonies on large trees near water bodies.
Sometimes, several species build their colonies on the same tree.

Heron is notable among the most well-known birds in our country.
Depending on the species, they are locally known as bok and bogla.
These medium-sized water birds stand still in the muddy water on the bank of ponds or wetlands to catch their prey.
Most species live and nest in groups in bamboo groves or various types of trees.

Cormorant is also seen living in groups.
They are very skilled at diving into water to catch prey.
These birds are found throughout the country.
Though they usually move alone or in pairs during the day, they gather in groups on large trees at dusk.
Cormorants prefer trees for nesting.
If the environment is suitable, hundreds of cormorants can build colonies on a single tree.

Asian Openbill also lives in colonies.
They are common in haors, beels, rivers, or waterbodies of our country.
They are often seen foraging near waterbodies or in flooded paddy fields.
After feeding, they return to their nests in the late afternoon.
They build large platform-like nests using small tree branches.
They prefer tall trees for making colonies and nests.
They often build colonies on the same tree together with herons and cormorants.
The Lesser Adjutant, a large, long-billed bird, also lives in groups.
This bird is found in the Sundarbans and a few other areas of the country.
They choose tall trees for nesting.
Though they form colonies, the Lesser Adjutant usually moves alone or in pairs.
Male and female birds take turns caring for the chicks.

Besides these waterbirds, Weavers also move in flocks and build colonies to nest on various trees during breeding.
They usually build beautiful hanging nests on Asian Palmyra Palm or Date Palm near villages or the edges of crop fields.
Their hanging nests captivate everyone.
While building a nest, they first create a strong base by weaving long leaves of Asian Palmyra Palm.
Then, they use their beaks to cut thin strips of leaves from various plants.
The bird weaves these long strips of leaves with its beak to build a complete nest.
These long nests are attached to trees and have entrances at the bottom.
Such finely woven nests, made with long strips of leaves and grass, are seen hanging on the Asian Palmyra Palm.

Colonial birds play an important role in the ecosystem.
The presence of bird colonies in any area indicates a healthy environment there.
By nesting in colonies, they help maintain wetland health.
These colonial birds help keep the environment of nearby water bodies healthy.
They also control populations of small animals by feeding on them.
Their excrement also improves soil fertility.
Although Bangladesh's diverse nature provides a good habitat for colonial birds, human activities are now posing a serious threat to their survival.
Waterbody pollution, use of chemical fertilizers and pesticides in agricultural lands, lack of suitable trees for nesting, and illegal hunting are reducing their number.
Thus, to sustain them in nature, we must take effective steps to conserve bird colonies.
We need to document and conserve colonies of different bird species across the country.
We must also raise awareness among local people about the importance of protecting bird colonies.
Trees are vital for building colonies.
So, we must stop cutting trees indiscriminately.
Only then will these bird colonies thrive, and our environment remain healthy.

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