The Birds of the Sand Dunes. 303 
of the previous season along the edge of the tamarack swamp at Mineral 
Springs. 
224. Regulus satrapa satrapa, Golden-crowned Kinglet. 
225. Regulus c. calendula, Ruby-crowned Kinglet. Both are abundant 
migrants. In the cold spring of 1916, I saw about thirty of the latter 
as late as May 20th at Mineral Springs. 
226. Polioptila caerulea, Blue-gray Gnatcatcher. A rare migrant and 
breeder. April 18th (1914) is the earliest date I have for them. 
227. Hylocichla ustelina, Wood Thrush. A rare summer resident, 
although it should be plentiful in such a fine place as Tremont. 
228. Hylocichla fuscescens fuscescens, Veery. A not very common 
migrant. What percentage of them is the western form, salicicola, is 
hard to say without taking a great many, which one does not like to do. 
But the chances are that both occur. 
229. Hylocichla a. aliciae, Grey-cheeked Thrush. On a few days 
during migration a more abundant species than the preceding, e.g., 
May 20th, 1916, when about ten were seen at Mineral Springs. 
230. Hylocichla ustulata swainsoni, Olive-backed Thrush. Of about 
the same status as the foregoing. 
231. Hylocichla guttata pallasi, Hermit Thrush. A somewhat more 
abundant migrant than the two preceding species. The earliest date we 
have is April 1st (1916). 
232. Planesticus m. migratorius, Robin. In the Dunes proper a not 
very abundant summer resident. Some days in summer one sees only 
about two all day; more common about the farms along the southern 
edge of the Dunes. 
233. Sialia sialis sialis, Bluebird. Also not so common here as in 
farming regions, but more so than the preceding. The earliest date I 
have is March 11 (1916), but they probably appear before this in mild 
seasons. 
BIBLIOGRAPHY. 
F. M. Woodruff, “Birds of the Chicago Area,” 1907. 
A. W. Butler, “The Birds of Indiana,” 1897. 
Some manuscript notes by Mr. H. L. Stoddard. 
My own notes. 
