KENNETH WILLIAMSON (Director). T H I S contribution follows similar lines to the one published (antea, vol. xliii, p p . 48-52), dealing with the 1949 season: the aim is not to give a complete record of the appearance of scarce migrants, but to extract from our " N o t e s on Species" recordbook observations which it is felt add something useful to the information--especially on field-characters--gi...
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