Migratory birds noticed by Nature Society of Tirupur team in coastal
areas of the State during a comparison study of diverse habitats.
To understand the diverse habitats of migratory birds and make
comparison studies, the bird watchers’ team of Nature Society of
Tirupur, that has been studying the arrival-departure patterns of such
species in western region, travelled across the State where migratory
birds flock in large numbers.
The assessment helped find the common factors that prompt certain bird
species to visit areas such as Nanjarayan tank in Tirupur and the
coastal lines of the State, though outwardly it looks as a divergent
environment.
Patterns
Disclosing the patterns of migrations and common factors that make
respective species to seek abodes in different parts of the State, K.
Ravindran, secretary of the Society, told The Hindu that many of
the species that flock the Nanjarayan irrigation tank area in Tirupur
and its hinterland were also seen in coastal areas of the State,
especially in Nagapattinam district.
The team found species like the Sandpipers, which come from Western
Europe, the Northern Pintails, that migrates from Northern Europe and
North America, and the Black-tailed Godwits, a bird species coming from
Iceland area in Europe, among few others, which comes to western region
of the State during winter season, in coastal areas too with some of
them even noticed in smaller numbers around irrigation tanks in
sanctuaries like Koonthankulam near Tirunelveli.
“Closer studies by us revealed that the presence of similar micro
organisms - that birds like Sandpiper and Northern Pintail take as feed,
shallow waters, and the salinity in water in the Nanjarayan tank caused
by the indiscriminate industrial effluent discharge, a blessing in
disguise here, are the common factors that make the birds to choose
either this area of Tirupur or coastal waters,” Mr. Ravindran said.
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