148 The Endurance of Birds. 



Losses from infrct/oiis disease -smaU. 

 Losses iiom chill very heavy. 

 Breeclim^ results —good. 



9. Birds Kept in Outdoor Aviaries in Summer, 

 IN Winter caught up and kept in roomy cages in a hot 

 room (temperature 70 cleg, to 7 5 deg.). Tcnipcraturc low- 

 ered before birds are turned out in April. 



Losses from accident small. 



Losses from iiijeclioiis d. sense small. 



Losses from chill small, .•ind nil among the Mrds newly turnei 

 out in spring, even when the weather turned cold and unfavourable. 



Nesting resiilts^iew . 



Hatching; results — very poor, although the cock birds appeared in 

 vigorous breeding condition. 



To sum up; ,my experience with Parrots is this. The 

 moderalely heated aviary, and the heated shelter with out--door 

 flight are alike most dangerous, and productive of enteritis 

 and pneumonia ad. lib. No heat and no draughts give 

 good results, with acclimatized birds, but a really open aviary 

 must be sunny in winter. If you must have heat have a lot 

 of it and keep the temperature e\cn if you can. 



Exercise is most important if you want to secure 

 fertile eggs,, and no amount of good care and good feeding 

 will make up tor the want of it with many species. 



Mr. Page hopes to resume his notes on this topice in next issue. 



-Ed.] 



The History of the Budgerigar 



By E. Hopkixsox, D.s.O., M.A., Etc. 

 '{Continued from page 130). 



So much then for the Budgerigar as Xatu/e made him. 

 Let us now see what our authorities have to say with regard 

 to the co'our varieties, of one of \\hi( h, the Yellow, examples 

 have been caught wild in their native land. Dr. Russ in his 

 " Speaking Parrots " (I quote from an English translation 

 published in the eighties), says : 



" Just as tli£ Canary needed a comparatively long space of time 

 " for its complete naturalisation among us ; and again, as we are not 



