2S4 FACULTIES OF BIRDS. 



in the Ionian Isles, and the vast marshes between 

 Venice and Trieste, follow in their travels the course 

 of the Tagliainento, to arrive at the lakes in the 

 environs of Villach and Klagenfort. They visit the 

 immense marshes which are formed by the lakes 

 Balaton and Neuzidel, where several species remain, 

 while others reascend the Danube, and continue their 

 journey to the Baltic Sea. On the lakes of Hungary 

 and the Danube several species are found which also 

 visit the shores of the ocean. 



" It appears to me that the species most peculiar 

 to the western countries assemble in the Archipelago, 

 and on the borders of the Black Sea. They ascend 

 the Danube, and, following the course of that river, 

 arrive in Hungary and Austria, countries that abound 

 with various species of birds in great numbers. 

 I have not travelled over the whole extent of country 

 crossed by the birds in the latter migration, nor that 

 which takes place from the Gulf of Lyons, by the 

 mouths of the Rhone, along that river, and by the 

 Douts, the way by which their companions reach the 

 Rhine. The banks of this great river are peopled in 

 spring and autumn by a large number of birds. 

 We find in the part which forms a limit to the 

 western countries of Germany all the. species that 

 live by the shores of the ocean and the Baltic Sea. 

 It is, however, very rarely that we see companies 

 composed of old ones, these seeming to come more 

 frequently by chance, and separately. The yearlings 

 of almost every species pass pretty regularly along 

 these parts; and the individuals that are killed on 

 the great lakes of Switzerland and Italy are either 

 young birds, or such as are one or two years old. 

 It is to be understood that the species which do not 

 continue their periodical journey as far as the North 

 Sea and the Baltic are exceptions ; the old ones of 

 these species are the only individuals that stray to 



