100 . Proceedings of the 



its wanderings much farther west in Nebraska than this 

 point. 



127. Wilsonia pusilla pileolata (Pallas) — Pileolated Warbler. 



On Se7)tember 21 and 23, 1911, I saw several warblers^ 

 distinctly referable to this variety of the species, among 

 the willows and dogwoods near the river. Like the Wil- 

 son Warblers their characteristic "chib" often identified 

 them as far as the species was concerned, before the birds 

 themselves were seen, and then the distinctly orange hue 

 of the forehead and a trace of the same color about the 

 chin and throat revealed the variety. These warblers are 

 among the m.ost confiding of their family, and often come 

 as close to the observer as they can, flitting through the 

 bushes and talking all the while in a conversational tone, 

 although their remarks are restricted to a single syllable. 

 If alarmed the}^ take to the tree-tops in many instanced, 

 and there move with such rapidity that it is almost im- 

 possible to keep them in sight among the leaves. 



128. Sctophaga ruticiUa (Linnaeus) — Redstart. 



Redstarts were common in the valley during May, dis- 

 appearing about the 27th of that month not to reappear 

 until the last week in August, but remaining then at 

 least until the 10th of September. They do not remain 

 to breed in the sandhills but pass through as migrants. 

 Where they are abundant, their song can be heard above 

 the general chorus, so persistently do they give their 

 ' ' su-i '-su-i '-sui '-sui '-sui '-su i ' - -. " 



129, Dumetella caroUnensis {lArvn&Qu^) — Catbird. 



Sometimes during the spring and summer the Catbird's 

 voice was heard fj'om the thickets but the singers were 

 rather retiring and were seen less often than heard. They 

 probably bred in small numbers along the river. On 

 August 25, 1911, I caught one by the foot in a trap which 

 I had set for rodents in the brush by the river, but I think 

 that this capture was entirely accidental. 



130. Toxostoma rnfiim (Ijinnaeus) — Brown Thrasher. 



Brown Thrashers were numerous in the river valleys 

 at all times from the earliest to the latest dates that I 

 made observations in the region and are recorded still 

 earlier by F. M. Chapman. On May 19, 1912, there was 

 a single thrasher in the hackberry grove which sheltered 



