The Endurance of Birds. 147 



Losses from //i/cc//oiis (li-scasc- small. if new arrivals arc .are- 

 fully quarantined and the ground is periodically disinfected uiih salt 

 dressings. 



hi ceding results not properly ascertained, hut some indication that 

 they might be good. 



3. Unheated Outdoor A\'Iarv, fairly sh'.'ltered 

 from wind, but damp and sunlcs.s' in winter. Sliclt.'r-'^hed 

 (used by the birds for roosting), one half of the front boardcfl 

 up from the top to bottom, 



Losses from accidriit very small. 

 Losses from infectious disease -very small. 



Losses from cold and chill in winter so hea\'y tliat the birds 

 were removed. 



4. Small, Unheated, Covered Aviary; glass roof, 

 rather draughty and with great fluctuations of temperature. 



/iisses from cliitl extremely heavy, aviary useless for ordinary 

 birds 



5. Small Unheated Outdoor Aviary. Entirely 

 covered in and draught-proof; rather sunless. 



Losses from accident — nil 



Losses from infectious disease— nil. 



Losses from cold and c/iill—nW. 



Nesting results— iAir. 



Hatching results very poor. 



6. Small Unheated Outdoor Aviary. Shclter- 

 shrd (used by birds for roosting) one half of the front 

 boarded up from top to bottom. Sunny situation. 



Losses from accident -very small. 

 Losses from infectious disease —nil. 

 Losses from chill- smaW. 

 Breeding results—not yet ascertained. 



7. Large Covered Aviary. .Moderately heated in 

 winter, temperature varying to some extent witii out-door 

 weather. 



Losses from accident- tnodemte. 

 Losses from infectious disease— modcra\e. 

 Losses from chill very high. 

 hreeding results- goi>d ; eggs fertile. 



8. Moderately Heated Indoor Shei.Ti r, uuh 

 out-door llighl. liirds roost indoors. 



Lossci fiuni acculiiit sniall. 



