Notes on the Ornitlwlogy of Yedo. 153 



literally swarming everywhere. Some idea of tlieir numbers 

 may be formed from the fact, that on a pond in the grounds 

 of the ex-Prince of Chikusen, situated only a few hundred 

 yards from my own house, where they are preserved for sport, 

 the estimated number on the water any day during the season 

 is 10,000. I have every reason to believe that the estimate is 

 correct. At night these flocks go out of town, but are always 

 back in the pond before sunrise. 



Mandarin Duck {A^ias gcdericulata), Linn. ; Temm. and 

 Sclil., Faun. Jap., p. 127.— This beautiful little bird is gener- 

 ally found in pairs, the male and female keeping together the 

 whole year. They roost in the trees in many of the gardens 

 and temple grounds. 



Summer Duck {Anas sponsa).—ls often found in company 

 with the mandarin duck. 



WiGEON (Marecapenelope), Linn. ; Temm. and Schl, Faun. 

 Jap., p. 127. 



Golden Eye (Anas clangula), Linn. ; Temm. and Schl., Faun. 

 Jap., p. 128. 



Tufted Duck {Fuligula cristata), Leach. 



Scamp Duck {Fuligula marila), Linn. 



Harlequin {Anas Ustrionica), Linn. ; Temm. and Schl., 

 Faun. Jap., p. 129. 



American Wigeon {Anas Americana), Gmelin. 



Merganser {Mergus serrator), Linn. 



The foregoing seven species are all found in the private 

 ponds, often swimming in mixed companies. 



Grebe {Podiceps Fhillijopensis?).— This little grebe is to be 

 seen everj^vhere. I have not observed any other species, 

 unless a bird I once saw in a quiet corner within the private 

 grounds of the castle was a grebe. I never saw it again, nor 

 had I previously noticed it. I once, however, saw a painting 

 of it on a Japanese screen. It was a curious-looking bird, 

 and I exhibit a small copy, from memory, of the sketch on 

 the screen. 



Cormorant {Carbo cornioranus), Temm. and Schl., Faun. 

 Jap., p. 129. — The common cormorant ranks first amongst 

 the birds of Yedo as to numbers and permanent habitation. 

 A very large breeding station is situated in a fine grove of 



