1920 J Supplement to the A. 0. U. Check-List. 439 



1904. Between August 28 and September 7, 1918, Mr, Robert Moor- 

 croft obtained four, which had been killed or wounded by wires, at the 

 same street corner. He saw many others, during the same few days, and 

 says he has found dead or wounded Robins, at the same place, for some 

 time past. The stomachs were empty in each case, so that the birds are 

 evidently killed during the night or before feeding in the morning. A few 

 high wires pass over a small wooded park at this corner but no definite 

 reason can be given for high Robin mortality at this point. — H. L. 



267 Rusholme Road, Toronto, Ontario. 

 406 Queen St., Ottawa. 



SEVENTEENTH SUPPLEMENT TO THE AMERICAN 



ORNITHOLOGISTS' UNION CHECK-LIST OF 



NORTH AMERICAN BIRDS. 



The Sixteenth Supplement, the only one since the appearance 

 of the Third (1910) Edition of the American Ornithologists' Un- 

 ion ' Check-List of North American Birds,' was published in July, 

 1912. Since that time it has for various reasons not been ex- 

 pedient to publish further decisions. The Committee on Nom- 

 enclature, since its reorganization at the A. O. U. meeting in 

 November, 1919, has decided to begin the preparation of a new 

 A. O. U. 'Check-List'. This is undertaken as part of the coopera- 

 tion between the British Ornithologists' Union and the American 

 Ornithologists' Union in the production of a series of lists of the 

 birds of the several zoogeographical regions of the world, and will 

 probably be issued as the Nearctic volume of the proposed ' Sys- 

 tema Avium.' 



Since the publication of the last A. O. U. ' Check-List' the great 

 activity among x\merican ornithologists has resulted in an almost 

 unbelievable number — several hundreds — of additions and changes 

 most of which have been listed from time to time in 'The Auk' and 

 will have the consideration of the A. O. U T . Committee. As fast 

 as these cases are disposed of, it is planned to publish the decisions 

 in supplements to the 'Check-List,' in order that those who have 

 occasion to use the names of North American birds may have the 

 benefit of the opinions of the Committee. 



