Colorado has a wonderful diversity of birds, offering exciting specialties and serendipitous finds to birders from every part of the continent. Most people associate Colorado with its Rocky Mountains - easily accessible right up to the tundra in every season of the year. Winter-plumaged White-tailed Ptarmigan, the same color as snow - as shown in the author's cover photograph from Guanella Pass - is high on any birder's wish list, but on the way up...