Where have all the sparrows gone?

Sir, – In response to Liam Cronin (November 18th), I too have noticed as dramatic decline in the sparrow population in Dublin 2. I have been told that birds are particularly sensitive to the micro-wave radiation signals which emit from all the wifi and mobile phone boosters across the city.

It is a sad irony that in order to facilitate a generation of self-absorbed “tweeters” we are depriving our children the joy of real tweets. – Yours, etc,

JOHN DEVLIN,

Erne Terrace,

Dublin 2.