I am surprised to find Walden completely open.

April 9.

Saw several more redpolls with their rich, glowing yellow breasts by the causeway sides. 

Saw a wren on the edge of Nathan Stow's wood and field, with some of the habits of a creeper, lurking along a fallen pine and birch, in and out in a restless manner with tail up, a snuff-colored bird with many white spots and a fine chirping note. 

The beaked hazel stigmas out; put it just after the common.

I am surprised to find Walden completely open. When did it open? According to all accounts, it must have been between the 6th and 9th. Fair Haven must have opened entirely the 5th or 6th, and Walden very nearly at the same time. This proves how steadily it has been melting, notwithstanding the severe cold of the last half of March; i. e., it is less affected by transient heat or cold than most ponds. 

The flowers have blossomed very suddenly this year as soon as the long cold spell was over, and almost all together. As yet the landscape generally wears its November russet.

H. D. Thoreau, Journal, April 9, 1854

I am surprised to find Walden completely open. When did it open? See Walden ("In 1845 Walden was first completely open on the 1st of April; in '46, the 25th of March; in '47, the 8th of April; in '51, the 28th of March; in '52, the 18th of April; in '53, the 23rd of March; in '54, about the 7th of April.”) See also A Book of the Seasons, Ice-out.

The flowers have blossomed very suddenly this year. See  April 28, 1852 ("This year, at least, one flower hardly precedes another, but as soon as the storms are over and pleasant weather comes, all blossom at once, having been retarded so long. This appears to be particularly true of the herbaceous flowers. How much does this happen every year?"); See also A Book of the Seasons, by Henry Thoreau the Earliest Flower.