Humming birds suffer if they move uphill to escape the warming climate - Ars Technica

Heights hinder hummingbird hovering—this could be bad news as the Earth warms.

6 with 6 posters participating As the Earths climate warms, some animals may seek a reprieve from the heat in colder, northern climates or higher altitudes. For some species, these cooler locales ma… [+3288 chars]

full article...