Invited to tea with Eagle, Rabbit prefers to walk: ``It's a lovely day.'' The five other guests, each with different transportation, would gladly give him a lift, but he cheerfully turns them down: ``I like to look at the flowers and the butterflies as I walk along,'' he explains when Fox urges that ``It's perfect weather for ballooning.'' In the end, after the others' vehicles fortuitously fail, Rabbit gets to Eagle's house first: ``Sometimes it's quicker to walk.'' Reviews of modes of transportation are always popular, and McNaughton's fantastical illustrations of auto and helicopter are especially amusing; the wholesome theme and its ecological subtext add an aura of good sense to this cheery tale. (Picture book. 4-8)