288 



broods are sometimes reared, for young are not infrequently found in 

 the nest in August, and even in September. In an incubator the eggs 

 hatched on the 15 th day (W. Evans), and the young leave the nest 

 when about 10 days old (H. E. Howard). 

 Measure- Average of 100 eggs (51 by the writer and 49 by Rey), 17.73x13.45 



"""""■ mm., Max. 20.5 X 13.2 and 19.6 X 15, Min. 15.7 x 13.4 and 17.2 X 12.4. 

 Dwarf eggs measure 12.2 x 9.2, 12.8 X 9.6 etc. Average weight, 102 mg. 

 (Rey), 99 mg. (Bau). 



136. Aquatic Warbler, Acrocephalus aquaticus (Gm.). 



Plate 29, fig. 5—8 (S. France). 



Eggs: Thienemann, Fortpfl. Tab. XXI, fig. 11, a — c. Baedeker, 

 Tab. 19, fig. 18 (errore). Seebohm, Br. Birds, pi. 10; id. Col. Fig., pi. 

 52. Howard, Br. Warblers, pi. I, fig. 1 — 6 [?, 2]. Dresser, pi. — , 

 fig. 13—15. 



Foreign Names: Bohemia: RakSsnik vodiii. Denmark: Vandsanger. 

 France: Fauvette des marais. Germany: Binsen-Rohrsanger. Hungary: 

 Csikosfejil sitke Italy: Pagliarolo. Poland: Oajdivka wodniczlca. Russia: 

 Kamysdiewka wertljawaja. Spain: Araiidillo. 



Acrocephalus aquaticus (Gm.). Newton, ed. Yarrell, I, p. 380. Dresser, 

 B. of. Europe, II, p. 591 and Man. Pal. Birds, p. 122. Saunders, Man. 

 p. 87. A. aquatica (Gm.). Hartert, Vog. Pal. Fauna, p. 568. 



Breeding Range: Central and southern Europe, S. of the Baltic, 

 but apparently wanting from the Iberian and Balkan peninsulas. 

 British [Although it is by no means improbable that it has bred in the 



Isles. gj,^|.jgjj ig}es, there is as yet no satisfactory evidence that it has done so]. 

 Con- rpj^Q evidence as to the breeding of this species is far from satis- 



Europe. factory. In some cases it has probably been confused with the Sedge 

 Warbler, or overlooked altogether. Saunders doubts its breeding in Spain, 

 yet Irby's work contains a reference to a nest found by Verner in Anda- 

 lucia. It does however certainly nest in France, somewhat sparingly in 

 the Camargue, and locally in suitable spots further N., especially in the 

 departements of Somme and Nord, La Brenne etc. A few pairs breed 

 in the Low Countries, and in some parts of N. Germany, such as the 

 Mark Brandenburg, it is locally common, and in Silesia it is not un- 

 common, while it nests sparingly also in Schleswig-Holstein, S. Jutland 

 and Zealand. In S. Germany it is generally rarer, but is common in 

 Poland, E. of the AVeichsel, and ranges E. to the middle Urals (lat. 56°), 

 but evidence from S. E. Russia is unsatisfactory. It is sparingly distri- 

 buted in Switzerland, but has been found nesting at over 3000 ft. It is 

 found in Galizia and is not rare locally in Hungary, but is apparently 



