Plus: How to avoid weeds from feeder seeds, what makes hummingbirds so feisty, and cleaning hummingbird feeders.

Only Seeing Female Hummingbirds “I had a large swarm of hummingbirds last summer, but every one was a female—not a single male hummingbird among them. How can that be?” asks Birds & Blooms reader ...

Sometimes nature surprises us with extraordinary products of evolution. One prime example is the extraordinary sword-billed ...