Greeting Cards, Calendar with holidays, quotes and wishes for every occasion -

Sensitive indicators of the environment. Theme - «Bird Day»

21 quotes & wishes
Quotes and pictures for Bird Day. «Sensitive indicators of the environment» quotation with photo.
«Sensitive indicators of the environment» illustrated quotation. Bird Day, free quote pictures for Facebook, Twitter, LinkedIn, Reddit, Pinterest and other social networks.
Sending Quotes & Wishes
Sender: Name
Recipient: Name
bold italic underline Left Center Right Justify text color background color
Message on viewing
AntiSpam ← code →
send message
Quotes and wishes: «Bird Day»

Quotes & Wishes - Sensitive indicators of the environment Sensitive indicators of the environment

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.
Roger Tory Peterson
Copyright ©