/■,/,, A ' 7 



Variations in Bird Migration from fear to Year By W. \V Cooke 

 IV'. i Cooki maintain 'thai the departure from the winter home ha no 

 connection with the weather, and thai the averagi temperature at the 

 breeding groundi i the principal factor thai determine the time and speed 

 of migration" and thai ' local variations in temperature ihould have only a 

 slight influence in varying the date of arrival from year to year." We 

 think thai in this he is probably correcl l<m we cannot concede the degree 

 of accuracy thai he claims for variou calculation ba ed upon individual 

 first arrived records, The cau e ol variation and inaccuracy in the i 

 numerou and in an} efforl to ' corred ' them the per onal equation enters 

 unconsciously. We belie e els< vhere, tated thai for accurate com- 

 paral i ■■■ •■ I udie • I he combination of a large number of record i by differenl 

 observers from one vicinity is an absolute nece ity, Until such material 

 i- al hand much of the detailed calculation ii futile. 



\ntnnin Birds in Alcona County, Michigan, By J. Claire Wood. 

 An interesting contribution to a little known section of the state We 

 trusl thai Mr, Wood will be able to add a upplementary repoii on the 

 summei bii 



'l he •■ I of the Goldfinch l>a ed on Study of the Deserted Nfe I . By 

 •i M Rool Onlytwooul of eleven howed any thistle down in the 

 lining! 



A Critique of Barrows' " Michigan Bird Life." By B. II. Swales. 

 Thirteen e listed of which there eera to be no po itive record 



of their occurrence in Michigan. 



on the Breeding Habits of Agelaius phceniceu B W. L. 

 Backett. 



Corrections to a Preliminary Li I of the Summer Birds of Fall River 

 County, Southw< tern South Dakota ByS.S Vi 



Tho Oologiat ' Vol. XXX. No. 3 March 15, 1913. 



The Nfe ting Hi torj ol a Pair of Golden Eagle By C 8. Sharpe. 

 Excellenl illustration from photograph 



ting of the Prairie Horned Lurk in Southern [i. e. south-wi 

 Penn -. !•. ania i'< . S. 8 Dick 



Thelbi3.' X Series. Vol. I, No. 2. April, 1913. 



The Birds of Hong Kong, Macoa, and the Wesl River or Si Kiang in 

 South-eastern China, with special reference to their Nidification and Sea- 

 sonal Movements Part II. By It E. Vaughan and K. H.Jones. This 

 installment includes 79 species and is accompanied by a colored plate of 

 Unong many interesting notes we read thai Halcyon smymensu 

 and // pileatus are much oughl by the Chine e who use their blue 

 feathers for th< tureof the well-known ' Kingfisher enamel/ which 



ha been in u ein China since the time of Confucius." Pakeorni torquata 



» BSdited and published bj R. M Barnes, Lacon, ill. 



• Edited for the British Ornithologists' Union, by vv. L. Sclater. Published 

 by R. il. Porter, 7 Princes St., Cavendish 8q. \v., London. 



