| It's not easy to tell how changing climates will affect different living things. Many birds in North America are migrating an average of 9 days earlier and breeding sooner than they did 30 years ago. To shed new light, scientists keep looking, gathering data, and thinking. Your Journey North observations and records are part of this detective work. Are your robins arriving earlier, later, or at about the same time as usual? Help scientists watch and track:
Fran Ludwig |
