Eggs at Natural History Rooms.

December 7. 

To Boston. At Natural History Rooms. 

December 7, 2018

The egg of Turdus solitarius is light-bluish with pale brown spots. This is apparently mine which I call hermit thrush, though mine is redder and distincter brown spots. 

The egg of Turdus brunneus (called hermit thrush) is a clear blue. 

The rail’s egg (of Concord, which I have seen) is not the Virginia rail’s, which is smaller and nearly pure white, nor the clapper rail’s, which is larger. Is it the sora rail’s (of which there is no egg in this collection)? 

My egg found in R. W. E’s garden is not the white throated sparrow’s egg. 

Dr. Bryant calls my seringo (i. e. the faint-noted bird) Savannah sparrow. 

He says Cooper’s hawk is just like the sharp-shinned, only a little larger commonly. He could not tell them apart. 

Neither he nor Brewer can identify eggs always. Could match some gulls’ eggs out of another basket full of a different species as well as out of the same basket.

H.D. Thoreau, Journal, December 7, 1858

The egg of Turdus solitarius is apparently mine which I call hermit thrush, though mine is redder and distincter brown spots. See June 12, 1857 (“The egg of the Turdus solitarius is lettered "Swamp Robin."”); June 21, 1858 ("Talked with Mr. Bryant at the Natural History Rooms... The egg of the Turdus solitarius in the collection is longer, but marked very much like the tanager’s, only paler-brown");  June 22, 1858 ("[Edward Bartlett]Says the bird was a thrush of some kind. The egg is one inch by five eighths, rather slender, faint-blue, and quite generally spotted with distinct rather reddish brown, inclining to small streaky blotches, though especially at the larger end; not pale-brown like that described [June 21]. Can it be the Turdus solitarias? I have the egg.");

The egg of Turdus brunneus (called hermit thrush) is a clear blue. See June 21, 1858 ("Talked with Mr. Bryant at the Natural History Rooms . . .They have also the egg of the T. brunneus, the other hermit thrush, not common here."); September 29, 1855 ("At Natural History Library saw Dr. Cabot, who says that he has heard either the hermit, or else the olivaceous, thrush sing,—very like a wood thrush, but softer. Is sure that the hermit thrush sometimes breeds hereabouts.”).; June 12, 1857 ("At Natural History Rooms.. . . The wood thrush's is a slender egg, a little longer than a catbird's and uniform greenish-blue. . . . The egg of the hermit thrush [which variety?] is about as big as that of Wilson's thrush, but darker green.”) Also see note to April 24, 1856 ("Behold my hermit thrush, with one companion, flitting silently through the birches.")

The rail’s egg (of Concord, which I have seen) is not the Virginia rail’s, which is smaller and nearly pure white, nor the clapper rail’s, which is larger. Is it the sora rail’s? See September 7, 1858 ("Storrow Higginson brings from Deerfield this evening some eggs to show me, — among others apparently that of the Virginian rail. It agrees in color, size, etc., according to Wilson, and is like (except, perhaps, in form) to one which E. Bartlett brought me a week or ten days ago, which dropped from a load of hay carried to Stow’s barn! So perhaps it breeds here. Also a smaller egg of same form, but dull white with very pale dusky spots, which may be that of the Carolina rail."); September 18, 1858 (" Rallus Carolinus . . .in Virginia is called the sora"); September 21, 1858 (" the eggs of the Rallus Virginianus,labelled by Brewer, but much smaller than those I have seen, and nearly white, with dull-brown spots! Can mine be the egg of the R. crepitons [Clapper rail], though larger than mine?")

My egg found in R. W. E’s garden is not the white throated sparrow’s egg. See June 12 1857 ("At Natural History Rooms. — The egg found on ground in R. W. E.'s garden some weeks since cannot be the bobolink's, for that is about as big as a bay-wing's but more slender, dusky-white, with numerous brown and black blotches")

Dr. Bryant calls my seringo (i. e. the faint-noted bird) Savannah sparrow. See June 26, 1856 ("[S]aw, apparently, the F. Savanna near their nests (my seringo note), restlessly flitting about me from rock to rock within a rod."); April 22, 1856 ("The seringo also sits on a post, with a very distinct yellow line over the eye,_and the rhythm of its strain is ker chick | ker che | ker-char—r-r-r-r | chick, the last two bars being the part chiefly heard."); and note to August 11, 1858 (" I heard there abouts the seringo note."); See also Guide to Thoreau’s Birds "(Thoreau frequently called the Savannah Sparrow Passerculus sandwichensis the seringo or seringo-bird, but he also applied the name to other small birds.”); April 27, 1859 (“Hear and see the seringo in fields next the shore. No noticeable yellow shoulder, pure whitish beneath, dashed throat and a dark-brown line of dashes along the sides of the body.”)

He says Cooper’s hawk is just like the sharp-shinned, only a little larger . See May 17, 1860 ("J. Farmer sends me to - day what is plainly Cooper's hawk. . . .") .