Interesting comments! Thanks to all that replied, both here and
privately. I'm definitely playing devil's advocate here, as my own view
has bounced around considerably over the last few years, and I currently
have no personal working definition.
Most of the replies offered definitions that are party based upon ecosystem
definitions without regard for ecotourism. But even those were not
consistent.
There are multiple definitions for dividing the state into ecosystem or
natural regions. See the two following links for examples:
<
https://tpwd.texas.gov/education/hunter-education/online-course/wildlife-conservation/texas-ecoregions
For my money, I agree with Tim to a large degree. I look at it personally
based on herp distributions since that is an interest of mine and herps are
much less vagile than birds.
My boundaries for South Texas are Del Rio across the edge of the hill
country (roughly highway 90) to San Antonio then SE along the southern edge
of the San Antonio River to the coast. The San Antonio River seems to cut
it about right and it seems to be an approximate boundary for many
Tamaulipan species.
Seminole Canyon is definitely not in South Texas, it is part of the
Trans-Pecos.
Chris Harrison
San Antonio
Edit your Freelists account settings for TEXBIRDS at
//www.freelists.org/list/texbirds
Reposting of traffic from TEXBIRDS is prohibited without seeking permission
from the List Owner