What does BUOR stand for?

Of special note is the addition to this highly recommended picturebook for children a very special educational section, 'For Creative Minds', that provides children with fun facts about birds, 'bird math', bird injuries, and a 'Match the Nest' activity with nest information for Magpies, Killdeer, Robins, Screech-Owls, Starlings, Brewer's Blackbird; the Common Grackle, Meadowlarks, Whip-poor-wills, Mourning Doves, and the Northern Oriole.

This identification guide, one of a beautifully produced series from Helm - shows them as widely varied, from all-black like some of the grackles, to the vivid yellow and orange orioles (including the Baltimore or northern oriole which sometimes turns up in Britain).

The Northern oriole, Martin said, is a bright-orange-and-black bird with a white stripe across its wings.