Spring 2007 Calendar >> Spring Checklist >> Year at a Glance >> Next Season >> Last Season >> Sunlight Plants Migrations Photoperiod (Mystery Class) Spring 2007 Current Tulip Gardens Spring 2007 Current Whooping Crane Spring 2007 Current Monarch Butterfly Spring 2007 Current  Symbolic Migration Spring 2007 Current  Journey North explores the interrelated aspects of seasonal change. Changes in sunlight drive all seasonal change. Plants and animals around the globe must respond. Watch how the seasons affect the entire web of life and report your own backyard observations. Bald Eagle Spring 2007 Current Gray Whale Spring 2007 Current  Hummingbird d Spring 2007 Current  American Robin Spring 2007 Current    Weather and Songbird Migration Spring 2007 Current Habitat Projects Weather and Climate Weather and Climate Phenology Observations Other Signs of Spring Fall 2007 New to Journey North? Get ready now for Fall 2007... Sunlight Plants Migrations Photoperiod (Fall prep for Mystery Class) Tulip Gardens Whooping Crane Monarch Butterfly Symbolic Migration