Avian Visitors

I don't know what they are called in Spanish, but there is a species of birds here that seem to be a smaller version of the mourning doves that we have in Ohio.  I have often seen them in the trees outside the apartment.  Their mournful call, which gives the bird its name, is identical to what I was used to hearing in Ohio.  They are monogamous, and I almost always see them in pairs.

Yesterday, I noticed a pair of them perched on the narrow ledge of the window of my glassed-in balcony.  I went to get my camara, and they were still there.

I did a bit of research, and the habitat of the mourning dove extends down through Mexico.  The subspecies which lives in the eastern half of the U.S. is called Zenaida macroura carolinensis.  The range of another subspecies, Zenaida macroura marginella, extends all the way from western Canada to south central Mexico.  That's who my two visitors must be.

UPDATE - A reader from Mexico commented that he knows these birds as "tortolitas mexicanas".  I looked it up on Wikipedia, and although they are a member of the dove family, they belong to a separate genus from the mourning doves that we know in the United States.