302 Mr. W. C. Tait on the Birds of Portugal. 



of Deregez and Keliat to the N. and N.E., while more to 

 the west^ iu the country about the rivers Atrek^ Chandyr, 

 and Sumbar^ the beautiful Ph. persicus takes its place. 



Tetrao urogallus^ var. uralensis^ subsp. nov. 



T. rogallo similis^ sed ventriculo albo. 



This pretty race of the Capercailzie inhabits only tbe pine- 

 and birch-woods in the country of the southern branches 

 of the Ural. Its breeding-range is limited probably, on the 

 west and north, by the river Belaja, and on the north by the 

 river Ui. In its habits the Bashkirian Capercailzie resembles 

 the Black Grouse more than the typical Capercailzie. 



XXXI. — A List of the Birds of Portugal. 

 By William C. Tait, Oporto. 



[Continued from p. 201.] 



111. Cypselus APus (Linn.). '' Pedreiro," Oporto, Pena- 

 fiel, Vianna, and Redondella, Galicia; " Chiao," Oporto; 

 " Papalvo/' " Guincho,'' " Gaviao,'' Penafiel ; " Arviao," 

 '' Andorinhao,^^ Peniche ; " Zirro,^^ Val de Meudiz ; " Corta- 

 vento,'^ Sta. Clara a Velha and Algarve ; " Ferreiro,'^ Coim- 

 bra Museum. 



The Swifts arrive at Oporto from the 6tli to 15th of April, 

 and the last take their departure about the 15 th to 21st of 

 September, the greater number having already gone by the 

 end of August. At the seaside they remain later ; at Leya 

 de Palmeira, in 1883, I saw them almost daily until the 4th, 

 and one as late as the 7th October. 



On the yth September, 1881, I saw a Swift enter its nest 

 under a tile of the roof of a shed of the Oporto custom- 

 house,, and on the 12th and 21st I saw one of these birds 

 flying over my garden, probably one of the same pair. Its 

 companions had been gone many days previously. On the 

 16th of September, 1883, I saw a Swift visit its nest at Lc9a 

 de Palmeira. It has been said that the migratory instinct is 

 so strong that birds will leave their young when the usual 

 time for migrating arrives, but in the above instances such 

 was not the case. The maternal instinct is in fact so strong 



