bman
350 posts
Aug 16, 2007
8:22 AM
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Check out this SITE
Especially the populations TREND GRAPHS by region.
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Ron
Borderline lofts
"Declines of the Cooper's Hawk in the late 1940s and 1950s were blamed on DDT and pesticide contamination. Populations started increasing in the late 1960s, but it is still listed as threatened or of special concern in a number of states. Appears to be adapting to breeding in urban areas, which may help increase populations. Project FeederWatch data indicate stable or increasing numbers over the last 15 years. For graphs of regional trends of the Cooper's Hawk from PFW data, go here."
Last Edited by on Aug 16, 2007 8:55 AM
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Tony Chavarria
Site Publisher
1570 posts
Aug 16, 2007
8:36 AM
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Hey Ron, good post, now I wonder how those graphs would look if we added the number of roller and/or racing homer fanciers in the same regions.
Would a cursory look at the NBRC member directory reveal some anecdotal trends or correlations between increase in coopers and the number of fanciers in that region? Perhaps in urban sprawl?
I believe the most members of the NBRC are in:
1: California 413 Approx
2: Texas 78 Approx
3: MO 49 Approx
4: IL 46 Approx
5: NC 42 Approx
Maybe someone could take a look? Would be very interesting to know. hmmm
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FLY ON! Tony Chavarria
Check Out Our Pigeon Supply Store
Last Edited by on Aug 16, 2007 8:48 AM
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bman
351 posts
Aug 16, 2007
9:07 AM
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Tony,
Thanks for the help.lol.At a glance I see the largest increase in the more urban areas.I beleive due to the avaiablity and habitat provided to its prey base(song birds)
The coopers is just adapting to its enviroment.If you look at the range maps it is considered a year long resident in most of the US.I know I have them here year round but only have trouble in the fall and winter when you combine migrating birds with a reduced availability of prey.
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Ron
Borderline lofts
Last Edited by on Aug 16, 2007 9:08 AM
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