In this week's NatureWatch, columnist Thom Smith answers readers' questions about what flowers to plant to attract monarchs and other butterflies, as well as, what seeds and nuts to feed backyard birds. 

In this week's NatureWatch, Thom Smith answers your questions about ferns, monarchs and milkweed and the habits of bluebirds. 

Almost everyone has heard that the once common monarch butterfly is in danger of vanishing from the Americas.