Birds, It Must Be Admitted, Are The

Conservation Is Not Just An Ideal That We Read About; It Works.

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.

Penguins Are An Indicator Of The Health Of Our Watery Planet, And If They Are Unable To Survive, We Had Better Take Notice Or We Might Find Our Own Survival Threatened.

I Can Recognize The Calls Of Practically Every Bird In North America. There Are Some In Africa I Don't Know, Though

Butterflies Are Very Interesting. Here These Things Are Little Grubs For A While. And Then They Go Into A Little Coffin. There They Are In A Sarcophagus, And Then They Come Out And Dance With The Angels.