OTHEU PIGKON IIYUUIUK AND UK KKIH \< , <>] ( l.KTAI.N SI'I.( IKS. 



171 



lightly over it at this time. Other items of interest are found in the tables, and 

 these may be consulted by those who are interested in these topics. 



These ring-doves are so highly fertile that but few instances of "no development" 

 or "failed to hatch" are to be found in the records. There are a few such cases, 

 however, and they are associated with the following months: December (table 174), 

 January (table 175), August (table 176), June (one case), and November (three 

 cases, table 177). 



Sex and egg of clutch. It has previously been noted (table 167) that the above 

 group of blond rings threw 19 males and 21 females. It may now be observed that 

 these pure rings produce males more often from the first egg of the clutch and 

 females more often from the second. The cases recorded in these tables furnish 8 

 instances in which the two sexes were produced by the same clutch. In 6 of these 

 the first egg gave rise to the male and the second egg yielded a female; in 2 cases 

 this order was reversed. 



TABLE 170. Relation of sex to first and second egg of clutch in pure Stig. senegalemis. 



TABLE 171. 



dVPhaps chalcoptera; from dealer 10/30/03. 

 9 Phap> chiilcnptera; from dealer 10/30/03. 



Pair 1. 



0"A1. 6/11/05. 

 9 A 2. 6/13/05. 



cfB 1. 7/13. 

 9B2. 7/15. 



rfC 1. 7/25. 

 9C2. 7/27. 



D 1. 9/29. 

 9D2. 10/1. 



c? I 1. 5/3/06. 

 I 2. 5/5/06. 



Pair g. 



9 A 1. 9/8/05; hatched. 

 A _'. 9/10/05; no development. 



9 B 1. 10/1; lived several months. 

 B2. 10/3; dead at week. 



cfC 1. 1/3/06. 

 9C2. 1/5/06. 



D 1; no record. 

 D 2; no record. 



(RR33) 



