OBSERVED IN' HERTFORDSHIRE IN 1900. 
51 
black-backed gulls. Mr. A. Sainsbury Yerey also saw a bird of 
this species at Heronsgate. 
Great Black-backed Gull (Larus marinus ).—Street states that 
he saw great black-backed gulls at Tring, and Mr. Pryor saw 
a party of gulls, numbering from 60 to 80, which he put down as 
belonging to this species. 
Kittiwake (Rissa tridactyla). — Kittiwakes were observed at 
Tring in May. 
Little Auk (Mergulus alle ).—A bird of this species was picked 
up between Baldock and Stevenage by a woman who brought it to 
Mr. M. 11. Pryor. 
I now give the usual list of the arrival and departure of summer 
and winter migrants. 
Summer Migrants. 
Species. 
Locality. 
Date. 
Observer. 
Whinchat . 
.. April 24 ... 
... A. F. C. 
(Pratincola rubetra) 
Redstart . Berkhamsted . ,, 21.A. F. C. 
(Puticilla phoenicurus) 
Nightingale . Hitchin . ,, 18.A. W. Dawson. 
(Daulias luscinia ) 
Hatfield . 
. ,, 19 .. 
... T. Brown. 
St. Albans .. 
. ,, 19 .. 
... H. Lewis. 
Berkhamsted . 
. ,, 20 . 
... Miss Thursfield. 
Harpenden. 
. ,, 21 .. 
... J. J. Willis. 
Watford . 
. ,, 22 .. 
... Mrs. Hopkinson. 
S a wbr idge worth.... 
. ,, 22 .. 
... H. S. Rivers. 
Sandridgebury .... 
. „ 23 .. 
... Mrs. Verity. 
Broxbourne. 
. ,, 23 ... 
... Rev. H. P. Waller. 
Odsey . 
. ,, 26 .. 
... H. G. Fordham. 
Whitethroat . 
St. Albans . 
■ ,, 23 .. 
... H. Lewis. 
(Silvia cinerea) 
Berkhamsted . 
. ,, 24 .. 
... A. F. C. 
Lesser Whitethroat . 
Berkhamsted . 
. ,, 24 .. 
... A. F. C. 
(Silvia curruca ) 
Blackcap . 
St. Albans . 
. „ 22 .., 
... H. Lewis. 
(Silvia atricapilla) 
Chiffchafp . 
St. Albans . 
• „ 1 ■■ 
... A. Spary. 
(Phylloscopus rufus) 
Berkhamsted . 
. ,, 6 ... 
AFC 
Sandridgebury . 
, ,, 21 ... 
.. Mrs. Verity. 
Willow-Warbler . 
Berkhamsted . 
. „ 19 ... 
... Miss Thursfield. 
(Phylloscopus trochilus) 
St. Albans . 
. ,, 19 ... 
... H. Lewis. 
Sandridgebury . 
. ,, 21 ... 
. May 2 ... 
... Mrs. Verity. 
Wood-Warbler . 
Berkhamsted . 
„. A. F. C. 
(Phylloscopus sibilatrix) 
Sedge-Warbler . 
St. Albans . 
, „ 10 ... 
.. H. Lewis. 
(Acrocephalus phraqmitis ) 
Grasshopper-Warbler . 
Berkhamsted . 
April 20 ... 
.. A. F. C. 
(Locustella ncevia) 
Iree-Pipit . 
Berkhamsted . 
,, 18 ... 
.. A. F. C. 
(Anthus trivialis) 
St. Albans . 
„ 18 ... 
.. H. Lewis. 
Bed-backed Shrike . 
Berkhamsted . 
May 20 ... 
.. A. F. C. 
(Lanius collurio) 
Pied Flycatcher . 
Munden, Watford 
April 8 ... 
.. Hon. A. Holland- 
(Muscicapa atricapilla) 
Spotted Flycatcher . 
Odsey . 
May 6 ... 
Hibbert. 
.. H. G. Fordham. 
(Muscicapa grisola ) 
Broxbourne. 
,, 6 .... 
.. Rev. H. P. Waller. 
