665 
1921 .] the Near East and Tropical East Africa, 
Spring passage in the Sudan extends commonly to the 
middle of April, and birds have been obtained as late as 
12 . v. Spring passage north leaves the Egyptian Delta to 
the east and passes over the Fayoum and Wadi Natrun. The 
absence of migratory Yellow Wagtails from the Egyptian 
Delta in spring is most remarkable. Passage in the Fayoum 
and Wadi Natrun extends from about 15. iii. to well on into 
April, being very strong from 18. iii. to 20. iii. 
A few pass north through Palestine from the middle of 
March to the middle of April, and birds have been obtained 
on spring passage in Sinai from 31. iii. to 30. iv. 
Motacilla f. dombrowskii (Tschusi). 
No autumn record for Palestine, Egypt, or the Sudan. 
Six obtained in the Sudan from 31. iii. to 17. iv. Not 
uncommon on spring passage in the Fayoum and in Sinai. 
Obtained in Palestine on 22 . iii. 
No record from Kenya Colony or Uganda. 
Motacilla f. beema Sykes. 
No record for Egypt or the Sudan. A few obtained in 
Kenya Colony (Nairobi and Kisumu) in early March. 
Sladen obtained examples in Palestine on spring passage 
in 1918. 
Motacilla f. thunbergi Billberg. 
No Palestine record—in fact, there is no mass migration 
of any Yellow Wagtail in Palestine at any season. Scarce 
on autumn passage in Egypt. No autumn record for the 
Sudan, though Keichenow (Vog. Afr.) records birds from 
Khartoum and Senaar without date. A regular winter 
visitor to northern Somaliland. 
In Kenya Colony they commence to arrive at Nairobi and 
Naivasha during the last days of September, and are quite 
common all over the country by the middle of October. 
This race is common on both passages in the Caucasus and 
southern Kussia, and appears to jump direct in one long 
flight from those districts to its winter haunts in the tropics 
of Africa. 
