Following listed (with photos) are hummingbirds found in Maryland.
Ruby-throated Hummingbirds, Archilochus colubris – Native and Common – Usually arrive in the first week of May (some late April), with males usually being the first to show up to stake out their feeding territories. Most leave toward the end of September. Males usually depart first, and females and juveniles follow about two weeks later.
The male has a ruby-red throat, a white collar, an emerald green back and a forked tail.
The female has a green back and tail feathers that are banded white, black and grey-green.
Rufous Hummingbirds Selasphorus rufus – Native and Common – Like the Ruby-throated Hummingbirds, they usually arrive in Maryland the first week of May (some late April), with males usually being the first to show up to stake out their feeding territories. Most leave toward the end of September. Males usually depart first, and females and juveniles follow about two weeks later.
These hummingbirds are usually found in gardens and at feeders. These birds are fearless, and are known for chasing away other hummingbirds and even larger birds, or rodents away from their favorite nectar feeders and flowers.
Males can easily be identified by their glossy orange-red throats.
Females have whitish, speckled throats, green backs and crowns, and rufous, white-tipped tail feathers.
Rufous Hummingbird versus the similar Ruby-throated Hummingbird (Identification)
Allen’s Hummingbirds, Selasphorus sasin – Rare vagrants – The Allen’s Hummingbird is often confused with the Rufous Hummingbird, but the Allen’s can be identified by the green back whereas the Rufous has a coppery back.
The male has a throat that ranges in color from orange-red to yellow-orange, a back that is bright green, a rump that is rufous and its tail feathers are rufous tipped in black.
Broad-tailed Hummingbirds, Selasphorus platycercus – Accidental / Rare Vagrants
Males can most easily be identified by their iridescent, rose-red throats, white chest feathers and metallic green back and crown and their rounded tails. The males’ tails make whistling noises in flight.
Females lack the flashy throat patch of the male and are mostly pale below. Their white-tipped outer tail feathers are rust-colored close to the body and blackish in the center; the tail feathers in the center range from green to blackish.
White Hummingbird Sightings
Indian Head, Maryland: Albino Hummingbird reported by April Hancock – August 2016. This bird has a white plumage, pink feed, beak and feathers, but dark eyes – which would indicate that this is an “incomplete albino” …