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Reviews

01 March 1961 Comments Reviews Atlas of European Birds. By K. H . Voous. N e l s o n , London, i960. 284 pages; 419 maps and 355 photographs. 70s. One of the post-war developments in ornithology has been the attention given to bird distribution. There has been a growing realisation of ...

Notes

01 March 1961 Comments Notes Beetles in the plumage of birds.--On 25 th May 1959 I picked up a freshly dead Swift (Apus apus) on the sloping concrete bank of Hilfield Park Reservoir, Hertfordshire. On examining the bird I discovered a single beetle of the species Haltka ohracearighti...

A survey of moulting Shelduck on Knechtsand

01 March 1961 Comments Main paper sand-banks which lies 8.1 nautical miles from the German mainland between Bremerhaven and Cuxhaven. It extends from 8Â°i8'E to 8Â°29'i5"E and from 5 3 V ' i 8 " N to 5 3Â°46'i5"N. Robins Balje is a natural boundary on the south-west side, while the ...

Warbler fluctuations in Oak Woodland in the Severn Valley

01 March 1961 Comments Main paper T w o P R E V I O U S P A P E R S of mine in British Birds (1935, 1950) gave population statistics for the Nightingale (Luscinia megarhynchos) and four species of warbler--Willow Warbler (Pbylloscopus trnchilus), Chiffchaff (PL collybitd), Garden Warbler ...

The contamination of birds with pollen and other substances

01 March 1961 Comments Main paper A s A RESULTof an appeal in a paper by Ash (195 9), further specimens of polleniferous contaminants, some containing other substances, were removed from the heads of migrant birds in i960. The most notable contribution was made by P.H.J, in the Camargue, ...

Reviews

01 February 1961 Comments Reviews Vara Faglar i Norden (Our Birds in the North). Second edition edited by Kai Curry-LindaM (Swedish text). Bokforlaget Natur och Cultur, Stockholm, 1959 and i960. Volumes I and II, 1022 pages; coloured and black-and-white plates, and maps, (Four volumes: Sw...

Notes

01 February 1961 Comments Notes Ring-necked Duck in Co. Armagh.--A male Ring-necked Duck (Aythya collaris) stayed on the lake in the Public Park, Lurgan, Co. Armagh, from 20th March till 1st May i960 and was seen on many occasions by various observers. It then disappeared, but returned ...

Some photographic studies of the Nightjar

01 February 1961 Comments Main paper I N G E N E R A L W E TRY to publish photographs for their biological interest or because they illustrate points of identification, rather than for their aesthetic value. This aim is always borne in mind in the selection and presentation of the photograph...

An interpretation of variation in the dark-headed forms of the Yellow Wagtail

01 February 1961 Comments Main paper variation to be seen in the Yellow Wagtail (Motacilla flava). T h e chief mistake made by most investigators has been that of splitting the group into too many forms on the basis of too few specimens, the most flagrant example of this being in the monogra...

The " Lesser Scaup " problem

01 February 1961 Comments Main paper observations in Britain of ducks that were thought to be Lesser Scaups (Aythya affinis), a North American species not recorded in Europe. This note is based on a detailed examination of one of these --that first seen at Sutton Courtenay, Berkshire, in Dec...

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Reviews

Notes

A survey of moulting Shelduck on Knechtsand

Warbler fluctuations in Oak Woodland in the Severn Valley

The contamination of birds with pollen and other substances

Reviews

Notes

Some photographic studies of the Nightjar

An interpretation of variation in the dark-headed forms of the Yellow Wagtail

The " Lesser Scaup " problem

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