Leaves now flutter and rustle in the breeze.

June 1.

It was so cold last night and still that I surely expected a frost and covered all our melons. But either the wind changed or clouds came over in the night, and there was no frost here. 

Here is another cool day. I sit with window shut and walk with a thick coat, as yesterday. Do we not always have these changes about the first of June?

Black-throated green warbler
Setophaga virens

Hear my evergreen-forest note, sounding rather raspingly as usual, where there are large oaks and pines mingled. er-er te, te ter twee, or er te, te ter .

It is very difficult to discover now that the leaves are grown, as it frequents the tops of the trees. But I get a glimpse of its black throat and, I think, yellow head. 

This and the red-eye and wood pewee are singing now at midday.

Within little more than a fortnight the woods, from bare twigs, have become a sea of verdure, and young shoots have contended with one another in the race. The leaves have unfurled all over the country like a parasol. Shade is produced, and the birds are concealed and their economies go forward uninterruptedly, and a covert is afforded to the animals generally. But thousands of worms and insects are preying on the leaves while they are young and tender. Myriads of little parasols are suddenly spread all the country over, to shield the earth and the roots of the trees from parching heat, and they begin to flutter and rustle in the breeze.

H. D. Thoreau, Journal, June 1, 1854

Hear my evergreen-forest note. See May 11, 1854 ("Hear the evergreen-forest note"); May 12, 1854 ("Heard again the evergreen-forest note. It is a slender bird , about size of white-eyed vireo, with a black throat and I think some yellow above, with dark and light beneath, in the tops of pines and oaks."); May 26, 1854 ("Evergreen-forest note still, the first syllable three times repeated, er-er-er, etc. , — flitting amid the tops of the pines."); June 12, 1854 ("Hear the evergreen-forest note, and see the bird on the top of a white pine, somewhat creeper-like, along the bough , and golden head except a black streak from eye, black throat, slate-colored back, forked tail, white beneath, er te , ter ter te"); See aslo May 6, 1855 (“the er er twe, ter ter twe, evergreen-forest note”); May 30, 1855("In the thick of the wood between railroad and Turnpike, hear the evergreen forest note, and see probably the bird ");May 7, 1856 ("I hear the evergreen-forest note close by;") and A Book of the Seasons, by Henry Thoreau, The Black-throated Green Warbler