Fall birds in flocks

October 10.

This morning it is very pleasant and warm. There are many small birds in flocks on the elms in Cheney's field, faintly warbling, — robins and purple finches and especially large flocks of small sparrows, which make a business of washing and pruning them selves in the puddles in the road, as if cleaning up after a long flight and the wind of yesterday. 

The faint suppressed warbling of the robins sounds like a reminiscence of the spring. 

Cooler and windy at sunset, and the elm leaves come down again.

H. D. Thoreau, Journal, October 10, 1853

The robins sounds like a reminiscence of the spring. See October 10, 1851 ("There are many things to indicate the renewing of spring at this season"); and note to  October 10, 1856 ("Indian summer itself is a similar renewal of the year, with the faint warbling of birds and second blossoming of flowers. ")

The elm leaves come down again. See October 10, 1852 ("The streets are strewn with elm leaves.")