IN view of the present interest in animal fluctuations, a survey has been "made of every bird breeding in the British Isles, to see what proportion of the species have increased, decreased or remained at about the same level during the last one, hundred years. Thanks to a large number of county avifaunists and to a smaller number of biographers of particular species, British breeding birds have bee...
This article is only available to registered users.
To read more, please log in or purchase a subscription.