452 



ARTIFICI I/. PROP\GATIO\ OF GROISE 



Almiist iiiiifiirml\ iho eggs seemed to arrive in pxtelleiit ri»iidition. Eventualh . however, it 

 was clis((i\crcd that, if thev were gathered within a period of three or four davs prior to 

 hatcliing. no apparent harm resulted from transporting them in an unheated container carried 

 on the front seat of the car. .At this late period incubation has apparently progressed to a 

 |iiiinl where sufficient internal heating is generated to allow the eggs to resist cooling for 



IN THIS KKTTI.E, I\fa BATKD CROLSE EGGS, Bl RIED BETWEEN LAYERS OF COTTON, WERE CARRIED 

 SUCCESSFULI.V OVER DISTANCES IP TO 2l)() MILES 



periods of six lip 12 iioins. In fart, one clutclL cold u|ioii collfctiori and tiioughl to he dead. 

 w'as placed on .'^alurda\ noon in a refrigerator at a tcnipcraturc not far alio\e freezing. 

 On the following Monda\ morning tiie clutch was removed for examination. The first egg 

 to lie o|)cncd rexcalcd a lixc emlir\o. The remaining seven eggs were inuuedialelv jjlaced 

 in an iniiihalor and >(\cral (hicks subsequenli\ were hatched. None li\ed for long, liow- 

 e\cr. for ari\ nnusnai strain placed u|)on the cmlirMi usualh is rc(li'( ti'ii in lowered halcli- 

 aliililj oi tlie egg and in a poorer livahiiity in tiie chick. 



W iLn-'ri!\i'ri:n Birds 



When (dtirined. w ild-trajjped hirds ma\ liecome lame in time, but are not dependable as 

 egg producers. Most of them are imported from Canada, in this connection certain Fed- 

 eral atwl .'^latc |ji'rmils coxciing liiipor lalion and |)Ossession aic iimkiHv icijiiircd. 



The birds should be secured as far in advance of the breeding season as possible and 

 plaicfl in pens on wire in close proximit\ to man to facilitate the genlling-down process. The 



