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 july, 1911 COLLECTION OF WINTER BIRDS FROM TRINITY AND SHASTA 121 on the ground, and they showed so little fear that it was possible to approach with- in a few feet of them, and when one got too close they would only fly up into the trees nearby. They kept up an incessant soft twittering noise, and for several days we had excellent opportunities for observing.them at close rauge, until the throw- ing of some apples into their midst caused them to fly off, and they did uot return before we left. Nine specimens were preserved, nos. 17362-17370. Vireo hutt0ni. Hutton Vireo: Only seen once at Helena, mingling with a flock of chickadees. Thry0manesbewicki drym0ecus. San Joaquin Wren..Not at all common; specilnen taken at Helena, no. 17372, is slightly darker than average drymoecus, being somewhat intermediate towards calophonus. Bae010phus in0rnatus in0rnatus. Plain Titmouse. Several noted at Tower House. Penthestes rufescens rufescens. Chestnut-backed Chickadee. Quite common at Helena. Chamaea fasciata henshawl. Pallid Wren-tit. Less numerous at Helena than Tower House, where their song was most noticeable on bushy hillsides. A series of four{een was taken, nos. 17376-17389. It is interesting to note that these are the very light interior form rather than, as would seem 'more natural, the darker coast form. Psaltriparus minimus rainlinus. Bush-tit. Oue flock was seen at Tower House and three specimens were taken. Near topotypes examined, from Salem, Oregon, show a light pileurn but the back and breast not appreciably so. Speci- mens from Pasadena have pileurns as light as the topotype; but others are dark and in no case does a decidedly light back accompany the light pileurn. Specimens from Horse Creek, Siskiyou Mountains, have a dark pileurn like that of those from Tower House, so that, with such a range of variation, it would seem the more reasonable course at the present time to consider the sub-species cahform'cus is not well established. Regulus caiendula. Ruby-crowned Kinglet. Not common at either locality. Myadestes t0wnsendi. Townsend Solitaire. Numerous at Tower House. Hy10cichla guttara nana. Dwarf Hermit Thrush. Seen quite often, so con- sidering their retiring habits they must have been quite common. Planestitus mi. grat0rius pr0pinquus. Western Robin. Common at both lo- calities. Ix0reus naevius. Varied Thrush. Quite common at both localities, with robins, but not as easily approached. Sialia mexicana 0ccidentalis. Western Bluebird. Large flocks seen at Tower House. NESTING NOTES ON THE DUCKS OF THE BARR LAKE REGION, COLORADO By ROBERT B. ROCKWELL PART I HE most important subject which confronted us, when we began a three years' study of the nesting. birds of the Bart Lake' country north of Dem'er, was that of determining the status of the different species of ducks as