OBSERVED IN HETtTFOIlBSniRE IN 1899. 183 



CojoiON Gfll ( Larus canns). — Tlic common gull occurrod at 

 Triug on several occasions during last year, the largest number 

 seen together at one time being six. 



Hkhking-Gull {Larus arfioitatm). — On June 22nd two of these 

 birds were seen at the lleservuirs, while three more were observed 

 there on September 14th. 



Lesser Elack-backed Vivia. {Larus fuscus). — Street, in his annual 

 report to me, refers to black-backed gulls, in contradistinction to 

 gi'eat black-backed gulls, as having occiuTed on two occasions, and 

 probably means the smaller species. 



Great Black-backed Gull {Larus marijitis). — On May 19th 

 Street saw three birds which he speaks of as great blackbacked 

 gulls, and again on August 2nd he also saw two. I have no doubt 

 that he correctly identified the species on these occasions, as in his 

 letter he ditferentiates between two kinds of black-backed gulls. 



Great Crusted Grebe {Podicipes cristatus). — I watched a bird 

 of this species Avhich had left her nest and then returned to it, 

 arranging around her with her beak the weeds with which, when 

 she left her nest, she had covered her eggs. It was very interesting 

 to see her do this, as she took each piece separately and placed it 

 on the edge of the nest. 



Arrival and Departure of Migrants. 



Species. Locality. Date. Observer. 



Wheatear Huntou Bridge Mar. 27 H. Procter. 



{Saxicola cenanthe) Berkhamsted ,, 31 A. F. C. 



Whinchat Berkhamsted April 27 A. F. C. 



[Pratincola rubctra) 



Redstart Berkhamsted ,, 26 A. F. C. 



{RiiticiUa phmnicurus) 



Nightingale Berkhamsted ,, 17 .... Mrs. E. Mawley. 



{Baulias luscinia) Odsey ,, 19 H. G. Fordham. 



Hitchin ,, 19 A. W. Dawson. 



Broxbom-ne ,, 19 Eev. H. P. Waller. 



Elstree ,, 20 (). E. Dawson. 



Hatfield „ 20 T. Brown. 



Sawbridgeworth ,, 20 H. S. Elvers. 



St. Albans ,, 22 Mrs. J. Hopkinson. 



Harpcnden ,, 23 J. J. Willis. 



Berkhamsted ,, 24 W. B. Hopkins. 



Gallows HiU ,, 27 H. Procter. 



Blackcap Elstree Mar. 24 E. P. Thompson. 



{Silvia atricapilla) Hunton Bridge April 11 H.Procter. 



Berkhamsted ,, 19 A. F. C. 



Chiffchaff lladlett Mar. 29 H. J. Lubbock. 



{Plnjlloscopus rufus) Berkhamsted April 1 A. F. C. 



Huuton Bridge ,, 3 H. Procter. 



WiLLOw-WuEN Elstree ,, 1 E. P. Thompson. 



{Phylloscopus trochilus) Hunton Bridge ,, 5 H.Procter. 



Berkbam-sted ,, 6 A. F. C. 



Radlett ,, 19 H.J.Lubbock. 



Grasshopper- Warbler Berkhamsted ,, 22 W. B. Hopkins. 



{LocKstella ncevta) 



Wood-Wren Berkhamsted May 3 A. F. C. 



{Phylloscopus sibilatrix) 



