ON BIRDS FROM THE NETHERLANDS. 203 
NOTE XXII. 
REPORT ON BIRDS FROM THE NETHERLANDS 
RECEIVED FROM 1 SEPTEMBER 1909 
TILL 1 SEPTEMBER 1910 
BY 
Dr. E. D. VAN OORT. 
(With plate 2). 
During the last twelve months our collection of indigenous 
birds has been augmented by 516 skins and about 65 
clutches of eggs. Among the skins are two specimens of the 
black guillemot (Cepphus grylle), a species, which was not yet 
represented in our collection. Of another species, also not 
represented in the collection and even new to the Avifauna 
of the Netherlands, which I have mentioned in a previous 
note in this volume !), I had the good fortune to purchase 
a stuffed example, that has been shot some time ago in our 
country. Of three species, Colymbus imber, Egatheus fal- 
cinellus and Motacilla flava thunbergi, which belong to our 
rare visitants, I received this year examples, of the last- 
named species several ones. 
The following gentlemen presented the Museum this 
year with specimens for the indigenous bird-collection: 
D. Bakker, Dr. J. F. van Bemmelen, EH. Blaauw, F. E. 
Blaauw, J. Boonstra, Jhr. W. C. van Heurn, C. Keyser 
Czn., J. M. van Oort, A. A. van Pelt Lechner, Dr. F. A. 
H. Schreinemakers, G. S. van der Spruyt, C. N. Tieleman, 
F. H. Verster and Mr. R. Baron van Zuylen van Nyevelt. 
The more important acquisitions follow here. 
1) Note XIV, Hierofalco gyrfalco islandus (Brünnich), a new bird to the 
Avifauna of the Netherlands, p. 176. 
Notes from the Leyden Museum, Vol. XXXII. 
