Digging Deep Canary

The poor canary one of the so called sentinel species are no longer used to alert miners to the presence of carbon monoxide

It appears that our feathered friends breathing rate its size and metabolism caused it to die quickly if carbon monoxide was present thus giving miners an early warning of the hazard

This is good news for canaries

 

A Red Factor Canary

I own a red factor canary

I keep it in a cage

That overlooks a railway line

It knows nothing about coal mining

 

Vacation

I offered to take my canary

On vacation to the Canary Islands

The creature refused to go

As it wanted to visit a coal mine

And pray for the souls of its ancestors