Jessica Pollock, Boise State University Curious Kids is a series for children of all ages. If you have a question you’d like an expert to answer, send it to CuriousKidsUS@theconversation.com. Why don’t hummingbirds get fat or sick from drinking sugary nectar? – Dhruv, age 15, Washington, District of Columbia If you have a hummingbird feeder […]