Calliope Hummingbirds have striking white bellies, you can tell which are the males of the species as they have scattered purple feathers across their breast.
The females have the same bellies and same greenbacks as the males.
These hummingbirds are known for their unique courtship displays which involve the male speedily flapping his wings to produce a particular frequency.
This frequency of their wing beats creates a sound akin to that of a buzzing bee.
Males of this species are very defensive and will often spend their time on a high perch observing their territory for any other males that may try to intrude.
Apart from this, not a lot is known about this bird due to its limited range making it more difficult to study.
It is not confirmed as to whether it is a monogamous species of hummingbird or not.
Much like Rufous Hummingbirds, Calliope hummingbirds have a western range across the states and are very rarely seen in the east of America.
However, these birds are also migratory and will sometimes visit the state of Virginia outside of its breeding seasons, most often during the winter months.
They have only been sighted in the western half of the state and further to the north.
These birds are not frequent garden visitors so tips for attracting them are scarce.
However, tubular flowers should help increase your chances of seeing one.