292 Roosevelt Wild Life Bulletin 



sounds like " tickleweetletoo,"' and several faint lisping notes. The 

 song is two long sweet whistles, the second about a tone lower than 

 the first in pitch, " phee-wee." This song, if it is truly such, is 

 likely to be heard in any month of the year, though perhaps more 

 commonly in spring than at other times. If one can learn to 

 imitate it closely, the imitation will often bring an answer, and 

 sometimes call the birds close to the observer, even in the winter. 



The nest is placed in a hole, frequently one that the birds have 

 excavated themselves in a punky birch stump. In the absence of 

 white birch in the Park, these birds use yellow birch equally well. 

 A number of unoccupied nesting holes were found in stubs of this 

 species. The inside of the hole is lined with soft materials, such as 

 rabbit fur. There are seven or eight young and sometimes even more, 

 a family that keeps the parents busy gathering small insects. 



Wood Thrush. Hylocichla mustelina (Gmel.) 



The Wood Thrush is a little smaller than the Robin and a bird 

 of very much the same shape and build. Its upper parts are 

 uniform brown, shading to bright reddish brown on the head. The 

 under parts are white, heavily spotted with large, round, dark brown 

 spots. 



This bird is rather locally distributed in the Park, common in 

 some localities and unknown in others, but found in both types of 

 forest. On the whole it is much less common than the Hermit 

 Thrush, and the two species do not appear to occur together. 

 The Big Basin is a Wood Thrush locality. No less than three birds 

 were singing there at once, July 19, and young were noted there on 

 August 1. 



The song of this bird is one of the most beautiful to be heard in 

 the Park. Whether it is superior to that of the Hermit Thrush is 

 really a matter of personal opinion ; but the true lover of bird music 

 will pause to listen to either whenever the opportunity comes, and 

 never cease to enjoy the sweet notes. The Wood Thrush song may 

 be known by the clear, flute-like phrases of three or four notes each, 

 with pauses between them, each phrase different from the last, the 

 bird singing from three to five different phrases, before it repeats. 

 The phrases are often prefaced or terminated with other notes of 

 less loud or sweet quality, but these notes are only audible when 

 one is near the singer. 



The nest of the Wood Thrush is placed in a bush or small tree, 

 usually ten feet or less from the ground. The nest is made of mud 

 like that of a Robin, but is somewhat smaller. The exterior is 

 covered with leaves and the interior lined with roots. The eggs 

 also resemble those of the Robin, being greenish blue, without 

 marks, and only slightly smaller and darker in color. 



Hooded Warbler. WUsonia citrina (Bodd.) 



This beautiful warbler is olive-green above and yellow beneath. A 

 patch of black covers the entire throat, upper breast and sides and 

 top of the head, leaving a bright yellow spot about the forehead 



