Letters

01 May 1989 Comments Letters The separation of Northern and Isabelline Wheatears. On returning to the beautifully illustrated paper 'Field identification of West Palearctic wheatears' (Brit. Birds 80: 137-157, 187-238), I noticed a feature separating Isabelline Oenanthe isabellina...
Read More

Letters

01 June 1958 Comments Letters S I R S , -- U n d e r the above title (anlea, vol. L, p p . 432-434), R. Hewson has usefully drawn attention to the aerobatics-- familiar in individuals--that are sometimes performed by flocks of Ravens (Corvus corax) and has discussed questions suggeste...
Read More

Stay at the forefront of British birding by taking out a subscription to British Birds.

Subscribe Now