SEX-UMITKI) HKUKIMTY IV rKKTAIN CKOSSl.s. 



145 



130 and 131. It will be seen that brown and white offspring appear in a nearly 

 3 : 1 ratio (49 to 18) and that all of the white young of known sex (7) were females. 

 Some of the brown birds of known sex (5 to 19) were also females. That the 

 "brown" birds were by no means the equivalent of pure S7. risoria will be made 

 clear by a reference to pi. 25. 



TABLE 127. 



li 1. 3/29/90; unhatcl.nl. 

 li -2. 3/31/90; unhatched. 



13. 4/21; no test. 

 C. 4/30; white. 



cf St. alba (W) ; probably alive 1900. 

 9 St risoriii (I) 1); 7/15/95. 



I) 1. 5/29; disturb.',!. 

 1> 2. 5/31; light brown. 



K 1. 6, 2S; white. 

 c?E 2. 6/30; light brown. 



<?V I. 7/31; light brown. 

 F2. 8/2; light bruwii. 



9O. 9/27; white. 



9H 1. 11/3; white. 

 j : H2. 11,5; light brown. 



I. 12/1; no teit. 



(C 7/10) 



9 A 1. 4/9/96; dark brown; 172 g. 

 c?A 2. 4/11/96; light brown; 167 g. 



9 B 1. 5/14; dark brown; 177 g. 

 cTB 2. 5/16; light brown; 15-1 K. 



9C 1. 6/21; dark brown; 157 g. 

 9C 2. 6/23; dark brown; 153 g. 



9 D 1. 7/29; dark brown; 142 g. 

 9D2. 7/31; light brown; 176 g. 



TABLE 128. 



d" St. risoria (X) : (155 grams wt.). 



9 St. alba (\V 2);'(151 g. wt.). 



E 1. 9/4;unhatched. 

 E 2. 9/6; dark. 



F 1. 11/26; deserted. 

 F2. 11/28; deserted. 



G 1. 1/4/96; killed by cold. 

 G 2. 1/6/96; killed by cold. 



(XS 5) 



TABLE 129. Color and sex of offspring of alba-risoria hybrid males x risoria-alba hybrid females. 



A 1. 5/9/97; not hatched. 



A 2. 5/11/97; record indefinite. 



cfB 1. 6/11; light brown. 

 9 B 2. 6/13; light brown. 



cf C 1. 7/20; brown. 

 d*C2. 7/22; brown. 



9D1. 8/25; white. 

 c?D2. 8/27; brown. 



E 1. 11/24; hatched. 

 E2. 11/26; hatched. 



rf 1 alba X risoria (\VIH.F 2) ; light brown; 8/16/96; 6/2- 

 9 "risoria X alba (X\V 21)1; dark brown; S, 13/96. 



F 1. 1/8/98; no development. 

 F 2. 1/10/98; brown. 



G 1. 2/9; brown. 1 

 G 2. 2/11; white. 



H 1. 4/24; removed. 

 H 2. 4/26. 



I 1. 6/7; brown. 

 I 2. 6/9; brown. 



J 1. 7/13; brown. 



J 2. 7/15; not hatched. 



K 1. 8/20; brown. 



K 2. v'22; brown. 



L 1. 10/5; white. 



1. 2. 10/7; white. 



M 1. 10 '27; hatched. 



M 2. 10/29; hatched. 



N. 4/9/99; no r rd. 



O 1. 4/20; no test. 

 O2. 4/22; no test. 



P 1. 5/27; white. 1 

 P2. 5/29; brown. 



1 Shades of brown were apparently not distinguished during this year. EDITOR. 



(C 7/13. P 16) 



