.■■)|. Till-: Wn.sox IU'llktix — No. 5*J. 



oO. * liinnta (■itiKiilciisis. — Can.-ula (Jtioso. 



A fonnuoii lui.craiit. perhaps inorc ahuiidant in siirini;. They gome- 

 times freciueut the ponds. Imt arc usually luiuid Iccdiiit; ou the cul- 

 tivated fields inside the dyke at the hase of the Point. ()l)scrv(!d Oc- 

 tober 28, ]!)€;"), and Octohor 11 and 12, lOUU. 

 31. * Olor colioiiliiuniiK. — Whistling Swan. 



(Jardncr reports Swans as occurrins irregularly in spring. Usually 

 thoy remain well out in the lake, hut sometimes during heavy weath- 

 er they venture in on llie ponds. It is less connuon in tall. We have 

 seen mounted specimens of tiiis species in Leamington and as culiiiu- 

 hiuiiits is the common torm in this section, list it under this head, 

 though Imvvuiator may txcur. 



SPRING MIGRATION ANOMALIES IN l!»o; 



AS OliSEIU'ED r.Y O. W1I).M.\XX AT ST. LOUIS, MO. 



The abnormal weather of the spruig of 190.7 cattsed un- 

 precedctited dcviation.s of migration dates from the standard 

 set up (hiring thirty years of observation. A series of ten 

 hot summer day."^ in the hitter ])art of [March pushed vegetation 

 to a state of development never seen before at that time, open- 

 ing the buds of leaves and flowers not opened in other years 

 before the latter part of April. Just as these tender growths 

 were exposed, and before the_\- had time to strengthen, a 

 freeze followed in early April, killing theuL All through 

 April the temperature remaine<l so low that almost no advance 

 at all was made in ]-)lant growth, and this perfect, most re- 

 markable, standstill lasted till early May and even then 

 progress was exceedingly slow. Hickories did not leaf before 

 the second week of May and Sycamores, whose first leaves 

 have been killed, were still without leaves at the end of May 

 and are eveu now (June <;) very thinly clothed. 



That this retardation of plant growth had more to do with 

 the delay of migration than the lew temperature itself seems 

 probable. Insectivorous birds seem to be intluenced more by 

 the condition of vegetation than the weather, especially those 

 which find their principal food in the small larva: infesting 



