Name: Jesse Lasky
I am posting this message in hope of finding
more information on bluebirds because I am starting a trail of
bluebird boxes near my home. I have already done a lot of research
on bluebirds already but I still have some questions. One of these
was what is the size of a bluebird pair's territory. Another
question I have is what amount of this area has to be open grassy
area. I would also like suggestions on how I can make this
trail better. Thank you.
According to Petersen's Field Guide, there are three species of
bluebird-- the western, the eastern, and the mountain bluebirds.
All three inhabit similar habitats and have the same nesting habits.
(hmm... 3 words with the root "habit" in one sentence)
No mention is made of territoriality. As a cross check, I looked up
a species I know to be territorial, Anna's Hummer, and the guide
does mention it; so the implication is that bluebirds are not
strongly territorial (many species are not territorial).
Be that as it may, territory size varies with food supply and
population density. If you put too many birdboxes too close
together, maybe other species will inhabit some of them.
As for the area of open grassy land, the Guide just says
"open terrain with scattered trees", so I would *guess* that
any terrain with 20% - 80% open grassland is probably OK.
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Update: June 2012