The range of the ruby-throated hummingbird is shown on the distribution map. The RED color shows where they breed.

1. Take a marker and outline the edge of the breeding grounds on the Journey North migration map.

2. Have they reached the limit of their spring migration? Take another marker and shade in the area to show how far you predict the rubythroats will get by June 1.

3. List the factors that you think might influence the migration in the weeks ahead.