Birds Are, Perhaps, The Most Eloquent Expression

Birds Are An Ecological Litmus Paper.

Birds Have Wings; They're Free; They Can Fly Where They Want When They Want. They Have The Kind Of Mobility Many People Envy.

Birds ... Are Sensitive Indicators Of The Environment, A Sort Of "ecological Litmus Paper," ... The Observation And Recording Of Bird Populations Over Time Lead Inevitably To Environmental Awareness And Can Signal Impending Changes.

Vultures Are Homely, But They Clean Up All The Garbage And That's Good. And They're Elegant In The Sky.

The Truth Of The Matter Is, The Birds Could Very Well Live Without Us, But Many -- Perhaps All -- Of Us Would Find Life Incomplete, Indeed Almost Intolerable Without The Birds.