BIRDS OF ETHIOPIA AND KENYA COLONY 



21 



due to age, sex, or wear. The following table of measurements will 

 give an idea of the size variation found in this species. 



Locality 



Sudan, Blue Nile, Aradeiba 



Kenya Colony: 



East Lake Stefanie 



South Guaso Nyiro River 



Lake Victoria 



Kabalolot, Sotik district 



Tanganyika Territory: 



Dar-es-Salaam 



Morogoro 



Belgian Congo Kamaniola 



Cameroon, Sakbayeme 



Madagascar: 



20 kilometers northeast of Tu- 



lear 



60 kilometers west-northwest 

 of Antsirabe 



Uganda: 



Rhino Camp 



Do 



Ethiopia: 



Lake Abaya 



Do 



Kenya Colony: 



Naivasha 



Do 



Do 



Do 



Do 



Uganda: 



Butiaba 



Rhino Camp 



Madagascar: 



Miandrivazo 



Do 



Morondava Delt. 



Tail 



91.0 



91. 



86. 5 



89. 

 93. 



90. 



87. 5 



91. 5 

 90. 5 



94. 5 



94. 



90. 

 93. 



93. 

 86.0 



88.0 

 88.0 

 82.0 

 81. 

 83. 



90. 

 92.0 



93.0 

 92. 5 

 92.0 



Culmen 



59. 



56. 

 56. 

 63. 



54. 



59. 

 56. 5 



55. 



56. 



53. 



56. 5 



58. 

 58. 



58. 

 58. 



50.0 

 56.0 



53. 5 



54. 



57. 



56. 

 60.0 



54.0 

 53.0 

 56. 



Tarsus 



87.0 



74. 

 72. 5 

 78. 

 80. 



76. 

 75.0 



75. 

 77.0 



79. 



77.0 



79. 

 73. 



78. 

 78. 



73. 



74. 



75. 

 75. 



70. 



73. 



71. 



72.0 

 73. 

 70. 



Specimens from Madagascar average slightly longer (2 milli- 

 meters) tails than mainland birds but the extremes of each group 

 overlap. 



The color of the legs and feet is subject to a rather inexplicable 

 type of variation. The majority of individuals have the bare por- 

 tion of the tibiae and the tarsi grayish yellow and toes darker, some- 

 times almost blackish. However, the male from Lake Abaya, as 

 recorded above, had tlie tibiae yellow, the tarsi and toes olive, while 

 a male in full breeding plumage from Victoria Nyanza, Kenya 

 Colony, has the tarsi recorded by the collector (W. R. Zappey) as 

 light yellow. Granvik -* notes that in an immature female collected 

 by him at Kavirondo Gulf, Victoria Nyanza, the bare parts of the 

 tibiae were saffron yellow, but the tarsi and toes were black. This 

 I find is not characteristic of most immature birds. 



-* Jourii. fiir Ornith., 1923, Sonderheft, p. 47. 



