South Africa, April 16 -- Birds, especially the urban variety, are feeling the effects of a warming planet. Higher temperatures and a lack of clean water correlate with lower bird diversity.

With summer and winter temperatures breaking records around the world, people in cities are keeping things cool indoors with ever greater reliance on air conditioning systems.

Outside office and apartment windows, vulnerable urban birds face physiological stress and mass die-offs, highlighting the importance of this waterer for their survival.

A design to thirst for

This simple new invention is turning air conditioning into a solution birds are thirsty for.

You've probably noticed the drips and drops that emerge from the outside pipes of air cond...