The hummingbird that stands out to me that I have seen this year is blackhead with maroon gorget and white belly.  It is so pretty.  I have not; that I know of seen it featured in these lessons but I am in the Eastern side of the US.  Only been able to view the three different ones for about two weeks with this being July.  the other two; one is mostly green and the other is a mostly light grey.  These last two come and go quickly but the white and black will hover longer giving me a better look.  Last year was the first year I put out the nectar (homemade) so I am hoping to get more species and colors each year.  For those that have been doing this for years I have a question.  Last year my feeder was in my back yard and I put it back there again this year.  I bought another feeder and have put it near a window in my front yard.  It has only been a day but so far they have not seemed to have found it.  Question is do you think they will find it or should I just put it in their paths near the one on the back side?   Thnx for any feedback.  I'm sure the white black red is a ruby throated hummingbird just I don't believe I seen it in the lesson as that color. Mary  

Yes! I see two hummingbird species on a regular basis when I go on short walks or long hikes in my area. These species are the Anna's Hummingbird and the Rufous Hummingbird, which I learned in this lesson are considered to be in the hummingbird genetic group called Bee.

I live in Central Illinois and Ruby-Throated Hummingbirds are common here.  I plant flowers on my front deck that attract them every year and also keep hummingbird feeders out.  They are endlessly entertaining to watch!