Hi  Matt,

Holden has Bluebird data going back 50 years.  While the population there
has stabilized since the early 90's the hundreds of yearly fledglings have
to go somewhere.  They have spread all over the region and are now common
year round residents in our area.  Non migrant species are actually easier
to track and determine if a change in population is due to some non random
variation.

Haans

On Mon, May 21, 2012 at 10:28 AM, Haans Petruschke <[log in to unmask]>wrote:

> Hi,
>
> It certainly seems to be a banner year for Great Crested Flycatchers here
> in the forests on the front of Allegheny plateau.  They are everywhere in
> dense concentrations, and already building nests.
>
> On the other hand Indigo Buntings are surprisingly absent.  Most variation
> of this sort is normal and due to random causes.  While an absence of
> Indigo Bunnies is noteworthy, it is nothing to be concerned about if it is
> localized.
>
> Haans Petruschke
> Kirtland
>

______________________________________________________________________

Ohio-birds mailing list, a service of the Ohio Ornithological Society.
Our thanks to Miami University for hosting this mailing list.
Additional discussions can be found in our forums, at www.ohiobirds.org/forum/.

You can join or leave the list, or change your options, at:
http://listserv.muohio.edu/scripts/wa.exe?LIST=OHIO-BIRDS
Send questions or comments about the list to: [log in to unmask]