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Bird - Lore 



northward travel, and by the time the 

 advance guard reached this region, the 

 local cold conditions had ceased. Audu- 

 bon's Warbler came about on time, to wit, 

 April 27, when three were seen, and it was 

 noted daily thereafter until May 6, when 

 a single Myrtle Warbler was also noticed. 

 An Orange-crowned Warbler was seen on 

 April 29, a MacGillivray Warbler on sev- 

 eral days between May 1 and 17, and a 

 Pileolated Warbler on May 14. Evidently 

 the weather and food conditions were pro- 

 pitious for these small insect-feeding spe- 

 cies for the Yellow-throat and the Ruby- 

 crowned Kinglet were seen about the same 

 time (May 15 and 16). The writer has the 

 impression that a good many unusual birds 

 penetrated into the.heart of the city during 

 the migration just past, as, for example, 

 the Yellow-throat. This season has demon- 

 strated once more how much regular and 

 systematic search and observation have 

 to do with the length of the list of migrants 

 seen by any particular observer. It is a 

 number of years since the writer has been 

 able to get out as regularly each day as 

 he has this year, and more migrants have 

 been noted within Denver and its im- 

 mediate neighborhood than for several 

 years past. 



The Evening Grosbeaks remained here- 

 abouts at least until May 27, when several 

 were studied in Washington Park. The 

 Nighthawk came about on time (May 28), 

 but in noticeably smaller numbers, and it 

 now seems more scarce about Denver than 

 for several years. Red-headed Wood- 

 peckers arrived in this region during the 

 third week of May, which is a normal 

 arrival date; this species ordinarily in- 

 filtrates the area quite slowly, yet this year 

 it seemed to have arrived all over at the 

 same time. 



The writer saw more White-crowned 

 Sparrows here this spring than ever before; 

 there were easily ten White-crowns to one 

 Gambel's Sparrow, while ordinarily this 

 ratio is reversed. These Sparrows were at 

 least a week late in arriving in Denver. 

 Poorwills were first noted here on May o 

 and n, five having been seen on the latter 

 date in one of our parks. It is of interest 



to call attention to the fact that this species 

 spends its summers in the mountains, evi- 

 dently enjoying a cool climate, while its 

 congener, the Nighthawk, is more com- 

 mon on the plains, or warmer areas in the 

 'hills.' The two seem to arrive hereabouts 

 according to these predilections, the Poor- 

 will earlier in cool weather, and the Night- 

 hawk later when the weather is much 

 warmer. 



There have been no Lazuli Buntings in 

 the area this spring, according to the 

 writer's notes. — W. H. Bergtold, Denver, 

 Colo. 



San Francisco Region. — Except for 

 the continued presence of a few Golden- 

 crowned Sparrows that had not yet com- 

 pleted the spring moult, the readjustment 

 of bird-life in the San Francisco region was 

 practically complete by May 1. There are 

 often Western Tanagers and belated Cedar 

 Waxwings waiting for a taste of the cherry 

 crop, but the other species of land-birds 

 are enthusiastically preparing for the com- 

 ing families, if they are not already busily 

 providing for their needs. 



Varied Robins, though reported in the 

 last issue as missing, were seen again on 

 April 16, this reappearance being due per- 

 haps to the arrival of migrants passing 

 through from the south. Sierra Crossbills 

 remained in Golden Gate Park until April 

 20 at least, and on the same date Red- 

 breasted Nuthatches and Myrtle Warblers 

 were still present and Violet Green Swal- 

 lows were passing through. 



In the Berkeley hills, Hermit Thrushes 

 were seen until April 26, and on the next 

 day a Russet-backed Thrush was heard for 

 the first time. Fox Sparrows were gone on 

 the 24th, having remained somewhat later 

 than the Ruby-crowned Kinglets, Audu- 

 bon Warblers, and Juncos. 



The summer visitants in the meantime 

 had been coming in in about their usual 

 order. Black-headed Grosbeaks were heard 

 for the first time on April 16; the Yellow 

 Warbler. April 20, Tolmic Warbler, April 

 23; and the Lazuli Hunting, April 26. The 

 Bullock Oriole was seen in Alameda on 

 April 27, the Olive-sided Flycatcher and 



