Probably no branch of aviculture has progressed so rapidly during the past twenty-five years as that which has for its central interest the production of the many beautiful and rare crosses between various species of birds which to-day tempt the appetite of the bird fancying public, ever on the look-out for something new. Besides their scientific interest (which is very considerable, insomuch that they show to a nicety in very many cases the exact degree of relationship which certain species bear towards each other), they are well worth attention from a monetary point of view.' Many of the earliest books, particularly those dating back to the 1900s and before, are now extremely scarce and increasingly expensive. Hesperides Press are republishing these classic works in affordable, high quality, modern editions, using the original text and artwork.
