1907] The Fulvos Tree-Duck in British Columbia. 213 



The above interesting note by Mr. Bradshaw refers to a well 

 known habit of the Milkweed Butterfly (also known as the Mon- 

 arch). This habit of collecting in large numbers resembles very- 

 much the similar habit among birds, when gathering together in 

 large numbers just before migrating. The Milkweed Butterfly is 

 one of the few insects which migrate in large flocks. It is almost 

 certain that none of the insects in these great swarms pass the 

 winter in Canada. Although exceedingly common in many years, 

 all the parents of the vast numbers sometimes seen sailing over 

 clover fields or gathering nectar from various flowers, in late sum- 

 mer and autumn, fly up into Canada from the south. The cater- 

 pillars are very restricted in their food plant and are not known to 

 feed upon anything except the various species of Asclepias or milk- 

 weed. The excellent figure given above of the butterfly and the 

 smaller woodcut representing part of a swarm at rest on a dead 

 branch, have been kindly lent by the Editor of the Canadian 

 Entomologist, and were used in an article by Mr. J. Alston Moffat 

 in the Annual Report of the Entomological Society of Ontario for 

 1899, where an occurrence of these handsome butterflies similar to 

 the one now recorded from Manitoba, which was observed neai 

 London, Ont., is described. J. Fletcher. 



The Fulvous Tree-Duck in British Columbia. 

 In the Canadian Naturalist and Geologist, Vol. VI, 1861, p. 

 334, there is what must stand as a good record of the fulvous tree- 

 duck in British Columbia. In an article entitled " Recollections of 

 the Swans and Geese of Hudson Bay" Mr. George Barnston savs : 

 "Two small species of southwest habitat, the Dendrocygna 

 fl;;/?//;;//5 and Z). //;' never come north, as far as I know. It 

 have never seen the first, but have shot one out of a 

 pair of the latter on the banks of the Columbia above Okanagan. 

 This I daresay is usually its limit to the north, and I believe it 

 has never been seen to the eastward oi the great stony ridge. 

 Neither of these elegant little geese ever visit Hudson Bay." 

 This record is of additional interest in view of the recent occurence 

 of this species in British Columbia as given in the December num- 

 ber of this journal. 



Toronto, Ont. James H. Fleming. 



