To spot a Costa's hummingbird, you have to know what they look like. Females are hard to identify compared to other hummingbirds, as many share a relatively similar appearance. These have bright ...

But, if an area is filled with flowers year-round, such as in suburban gardens, the Costa’s may stay put. The ruby-throated hummingbird is one of the most common in the U.S. In fact, this ...

Costa’s generally plainer on throat and underparts, without dusky throat spotting. See black-chinned hummingbird.