I had been looking for an answer for why our house sparrows have become a vanishing species?
I have not found any luck.
Our ornithologists and bird watchers have not done enough.
I put the question to myself and these are the emerging facts.
1. This coincided with the disappearance of the migrant bird species which I counted over 30 in 1984.
2. Last 5 years I have not seen more than five species coming to our neighbourhood.
3. The last species who lost the habitat due to development was a type of robin who makes nests in the paddy fields. I call them the paddy birds and dearly as the last of the singing Bohemians. Once they lost the paddy field they started nesting on grass and when the remaining little waste land (now there is a three story building there) was encroached upon they disappeared. Till then I used to see at least 4 to 6 of the young ones yearly.
4. The house sparrows are more close to human habitat but they disappeared some 20 years ago.
That was my question.
I have seen one or two sparrows in Kandy City Center occasionally but none in the suburbs.
1. Unusual predator
2. Unusual predator of the eggs
3. Unusual destructor of their nests
4. Poison in our food and grains
I come to the last conclusion.
The amount of poison we eat every day in our food is sufficient to kill all the house sparrows over the last 30 years.
By way of aggro-economics we are killing our birds.
The story is true for pigeons too.