THE BIRDS OF THE LEA VALLEY RESERVOIRS. 203
The Dunlin, Calidris alpina subsp.?
It is an irregular autumn passage migrant. It has been
recorded in the years 1923, 1925, 1929, 1930, 1932 and 1933,
and in all months from July to November, inclusive, but only
in one year each in September, October and November. Small
parties were in most cases observed, but twenty-five were seen
on September 23rd, 1929, and twenty on October 4th, 1933,
at the King George Reservoir, when much mud was exposed.
The Curlew Sandpiper, Calidris testacea (Pall.).
It has been recorded on two occasions from the King George
Reservoir, when, in each case, much mud was exposed. Mr.
J. P. Hardiman saw two on September 23rd, 1929, and Mr.
K. R. Ashby saw one on September 16th, 1933.
The Little Stint, Calidris minuta (Leisl.).
It has been recorded on one occasion only. Mr. A. Holte
Macpherson, accompanied by Messrs. F. R. Finch and J. P.
Hardiman, saw one at the King George Reservoir on September
28th, 1933.
The Common Sandpiper, Tringa hypoleucos L.
It is a double passage migrant, but it is during the autumn
movement that it is seen commonly. During this migration
it appears from early in July and the numbers increase until
20 or more are present. The passage is generally completed
by the end of September. One remained from December 17th,
1927, to March 17th, 1928.
The Green Sandpiper, Tringa ochropus L.
It has been recorded in the years 1921, 1923, 1924, 1925,
1926, 1929 and 1933, and in the months of August, September
and October, but chiefly in August. From one to four birds
have been seen. In addition one was seen on December 13th,
1923, one on February 16th, 1924, and one on April 22nd, 1933.
The Common Redshank, Tringa totanus totanus (L.).
Occasional birds have been recorded in every month of the
year except January. It is probably of annual occurrence,
and from one to five birds have been seen. It probably nests
or has nested in the vicinity of the Reservoirs.
The Greenshank, Tringa nebularia (Gunn.).
It has been recorded on several occasions during the autumn
migration, as follows:—One, August 29th, 1925; single birds