184 The Wilson Bulletin — No. 101 



Carolina Chickadee, 20 ; Golden-crowned Kinglet, 16 ; Her- 

 mit Thrush, 1; Bluebird, 9. Total, 48 species and 1167 in- 

 dividuals. 



Crossbills had been seen so often that early in the winter lo- 

 cal ornithologists had high hopes that an " invasion " of north- 

 ern birds was due ; however, no other boreal species have been 

 seen, though red-breasted nuthatches have been much more 

 numerous than usual. The first crossbills were seen Decem- 

 ber 10, 1916, near Ashburn, Va., by E. R. Kalmbach, D. C. 

 Mabbott, and W. L. McAtee, one white-winged crossbill be- 

 ing seen with a flock of half a dozen red ones. White-wings 

 were next seen at Woodridge, D. C, on December 14, by 

 Mabbott. On December 24, Alexander Wetmore found a female 

 at Four Mile Run, Virginia, and that same afternoon about 

 forty of the same species were seen at Woodridge, D. C, by 

 E. G. Holt, Mabbott, and Wetmore. On December 27, while 

 making our Christmas Bird Census, the writers observed 

 others of this same species. At Four Mile Run one was first 

 seen as it flew past high in air, and later was followed and 

 located in a clump of Virginia pines. Later the same day 

 at Dyke, Virginia, Wetmore and A. K. Fisher found a 

 flock of seven in some low pines, and afterward observed 

 others in deciduous trees. At dusk fo'ur or five flew into 

 some cedars on a hillside, where they prepared to roost with 

 the j uncos. One of these crossbills was flushed from some 

 low weeds when it was almost dark. On December 30, near 

 Mt, Vernon, we saw two red and two white-winged crossbills, 

 in some low dense pines that had overgrown an abandoned 

 orchard. Occasional birds have been observed since the first 

 of the year, but the wave of migration among them seemed 

 to pass during the last week of December, and since that time 

 the bulk of the crossbills appear to have betaken themselves 

 elsewhere. 



The ducks noted in our list were seen on the Potomac, 

 where the birds were feeding in the channels and other open 

 places amongst the ice. On December 30 yellow-bellied sap- 

 suckers seemed almost common, and somewhat to our sur- 



