252 TROPICAL WILD LIFE IN BRITISH GUIANA 



Secondaries all new, full-grown, except from the 8th 

 inward which were still growing. 



RECTRICES 



Left 5 4 3 2 1 1 3 3 I ,5 Right 

 Old New New New New New New Old New Old 

 full- sheath full- 1-3 1-3 full- full- 

 grown grown grown grown grown grown 



4. 



Fornnila of tail molt: \> j^ g ^ 



COMPARATIVE MEASUREMENTS 



Middle 

 Weight Length Bill Wing Tail Tarsus Toe and Claw 



3 day chick 78 grams 176 14 23 — 32.5 32.5 



60 day chick 1 lb. 266 22 107 15 52 46 



Adult 2 lbs. 540 40 270 115 122 95 



