178 



THE LESSER BLACK-BACKED GULL {Zarus fuscus). 



March 15th. Pevensey (Sussex), flocks passing. 



„ 18th. Erskine Ferry (Clyde), first seen. 



„ 22ud. Greenock (Clyde), plentiful. 



„ 24th & 28th. Otterburu (Northumberland), several passing. 

 April 12th. Marbury (Cheshire), one seen. 



,, 21st. Bowdou (Cheshire), several passing. 



„ 27th &30th. Bowflon, tliree passing. 

 May 10th. Hornsea (Yorkshire), three passing. 



