The only eastern species of hummingbird is the Ruby throat so ID'ing them is a no brainer
The male has a flaming red throat called a gorget. For the red color to show, light has to hit it at just the right angle otherwise it appears black or brown.
Male birds aggressivly defend territory they stake out.
Length about 3 1/2 inches
weight about 3 grams (a nickel weighs about 5 grams)
Body temp: 106-108 deg F
Heart rate 250 / min at rest 1200 / min feeding
Resp: about 250 / min
# of young almost always two
active birds need to feed every 20 mins
mix is one part table sugar with 4 parts water no red color needed
lifespan 3-5 years
Migration : Mexico and Central America (2000 miles!)