1S91.] CiiERRiE, List of Birds of Sail Jos!', Co^ta Bica. 27C 



about five feet from the ground, in a shrub growing by the river bank, 

 and was constructed externally entirely of rootlets and dry grass stems, 

 only a very little mud being inixed with them. The measurements taken 

 from the nest are, 5.50 by 4, 2.50 deep outside. Inside 3.25 by3,i.75 deep. 

 The two eggs measure 1.12 X 82 and 1.13 X 83. On the last the spots 

 of brown are larger and more scattered, showing more of the pale glaucous 

 green brown. On the first the spots are smaller and thicker, the groimd 

 color darker and about the larger end almost completely hidden. 



5. Thryophilus modestus. — Of the two Wrens found in San Jos6, the 

 'Chinchirigiii' is by far the inost common and decidedly the noisiest, in- 

 habiting the hedge rows where their noisy, suspicious chatter and restless 

 motions are sure to attract the attention of the passer by, although a 

 glimpse will be seen here and there of the bird. The song is loud, clear 

 and piercing. The common name is derived frotn a supposed imitation 

 of the notes of the song. It is pronounced cheen-c lie-ree-gue, with a strong 

 accent on the last syllable. These notes are repeated iver and over very 

 rapidly. There seems to be no particular time or place for singing; they 

 are always ready. 



The nesting season lasts from early April to late in August. I have 

 taken young birds just from the nest by May 5, and as late as August 25. 

 I have searched diligently for the nest of this species, but thus far have 

 not succeeded in finding one. 



Young birds just beginning to fly are intermediate in coloration between 

 adult T. zeledoni, and T. modestus. Above, brownish slate like 2re/et/o»/, 

 but having a shading of umber brown instead of olive. Below breast and 

 belly white; sides, flanks and crissum ochraceous buff". In the adult bird 

 the eye is chestnut ; in the young, slate gray; feet and tarsi plumbeous. 

 As the bird grows older, the ochraceous deepens and extends forward 

 much further than in the adult bird, even encroaching on the sides of the 

 breast; centre of the breast and belly ochraceous buff. 



The parent birds and young remain in company until the young are 

 fully grown. I have frequently come upon these family parties and se- 

 cured them all. The two old birds will make a great noise and try in 

 every way to attract attention. But the young crouch close to their 

 perch and will scarcely stir even when one is within three or four feet of 

 them, searching for them. 



6. Troglodytes intermedius. —The Central American House Wren, or 

 'Zoterre' of the natives, while not nearly as common or as noisy as the 

 last is better known, not being so shy, besides having a habit of nesting in 

 small boxes prepared for them in the manner of the common House Wren 

 T. aedon. Its habits in general are very like those of the House Wren, 

 seeming, however, to prefer being close to the ground at all times. The 

 song, however, is not apparently as strong as in that species. 



Nesting begins in the latter part of January or early in February, as I 

 have taken young birds fully grown by February 15, and birds just from 

 the nest as late as June 23. While I have not taken any eggs myself I have 

 noted the birds constructing their nests in deserted Woodpecker holes and 



