OTHER PIGEON HYBRIDS AND BREEDING OF CERTAIN SPECIES. 163 



young from the tenth and last egg "died early," before the color of its plumage 

 was learned, but the complexion and down seemed nearly like the blond ring. 

 At this point the author writes on the margin of the record — "weakness at end 

 of season"! 



Senegalensis x risoria. — The offspring of this cross gave evidence of a sex-limited 

 inheritance of color; the "color of the female is a slight shade darker^ than the male; 

 the male has rather more of the vinous tinge on the breast. The orange color of the 

 iris is of deeper color in the female than in the male." (K 8) Three pairs of the 

 primary cross, Senegal x blond, showed fair fertility (table 160). Two of the Fi 

 males tested fully fertile — one with pure alba (table 161), the other with pure risoria^ 



(P 8, K 8) 

 » Weight of cf TS-A 1, 149 g. 'Fertile with Sp. suratensis. 



Table 158. 



cf seneg.-alha hyb. (11 ); 9/1/09; 10/9/11; 25 mo.; brother. 



9 seneg.-.nlba hyb. (10); 8/17/09, 2/5/11; 30 mo.; sister. 

 A 1. 4/30/10; some development; failed (cold ?) B 1. 5/21; no development.' 



A 2. 5/2/10; some development; failed (cold ?). B 2. 5/23; no development. 



failed; other hatched, 2 TSA 1; juveiinl feathers quite dark; dead 11/25/10 to 2/5/11; ? 7 mn. 



CI. 6/11-1 

 C2. 6/13/ 



c^Dl. 7/9 hatched 2 TSA 2 color same as 2 TSA l;dead 11/26/11 10 mo. 



D 2. 7/11; no development. 

 E 1. 8/29; no development. 



E 2. 8/31; no development. UA 0) 



' " Fertility. We see in this pair a lower fertility than when one of the hybrids is mated with a ring-dove. The optimum 

 usually reached about the end of May. and runs through June and July." (AA 6) 



^ The complexion of the Senegal dove at hatching is perceptibly darker than that of the blond ring; the darker 

 shade of the Fi female is similar to that of her sire. — Editor. 



' From the latter mating 2 birds are still alive at 5 years old; but a much-sought adequate test of their .sex has 

 thus far not been obtained. They lay no eggs, fertilize no eggs, and fight almost continually; they may prove to be 

 hermaphrodites. — Editor. 



