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From: joe@hanauma.stanford.edu (Joe Dellinger)
Newsgroups: sci.bio
Subject: Re: Ecosystemic Contamination
Message-ID: <5748@portia.Stanford.EDU>
Date: 10 Oct 89 23:31:22 GMT
References: <8909272147.AA01656@aristotle.Jpl.Nasa.Gov> <2035@frog.UUCP> <5661@portia.Stanford.EDU> <767.25311054@csc.anu.oz> <5715@portia.Stanford.EDU> <11681@burdvax.PRC.Unisys.COM>
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Reply-To: joe@hanauma.stanford.edu (Joe Dellinger)
Organization: Stanford University, Dept. of Geophysics
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In article <11681@burdvax.PRC.Unisys.COM> overt@antony (Christian Overton) writes:
>blackbirds (grackles)                europe                 n.a.
>   seen in large flocks?

I don't think you have grackles in Pennsylvania. True, they are "invading"
Texas, but I believe the invasion is a natural extension of their central
American range. (For those of you who have never seen one, Grackles are
dark colored birds. The males can have extremely large tails, and are
brightly iridescently colored. They are most known for making extremely
loud, extremely strange sounds something like the sound of a squeaky door
hinge overlayed on top of a fuzzy buzz. They are unmistakeable.)
Another recent natural invader of Texas is the Cattle Egret.
They came from Africa, crossed to S.A. apparently by themselves, and have
been spreading North ever since. Now they've made it to Texas. True to
their name you often see them standing on cows!

As for other natural invaders into Texas... how about scrub jays? Armadillos?
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