Have you ever had the chance to see the courtship dance of the sandhill crane? Have you been stumped by the question, ""is that a spruce, fir, or pine?"" What do pasque-flowers, prairie chickens, and the Swainson's hawk have in common ? (Spring, of course! One blooms, one booms, and the other looms high overhead, all in a Colorado April). Where are the best places to see mountain goats, bugling elk, and snow geese? And have you asked yourself, ""what is that butterfly doing flittering around in February?""