Wings, warming and Walden Pond

Early birds:

Swallows

Image Markus Vareavuo/naturepl.com

Birds are migrating earlier as temperatures rise: see http://www.bbc.com/news/uk-scotland-edinburgh-east-fife-38450228

Warning of warming in the 1840s:

Henry David Thoreau’s notes from Walden Pond provide a benchmark for climate change; see more at https://www.theguardian.com/books/2012/mar/14/henry-david-thoreau-climate-change

Image result for thoreau image

Henry David Thoreau, image at wikipedia.org

Resuming new life:

To a Marsh Hawk in Spring

There is health in thy gray wing,
Health of nature’s furnishing.
Say, thou modern-winged antique,
Was thy mistress ever sick?
In each heaving of thy wing
Thou dost health and leisure bring,
Thou dost waive disease and pain
And resume new life again.
by Henry David Thoreau