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style=3D"font: 12.0 ---1053708885-1515909496-1373559949=:20842 Content-Type: text/plain; charset=iso-8859-1 Content-Transfer-Encoding: quoted-printable =0A=0ANot to take away from the rapid decline that these species and others= are experiencing, I have wondered did these two species first benefit from= mankind as the are both strongly associated with man made objects. Were th= eir numbers from the peaks 30-40 years ago actually inflated due to man mad= e structures being available. Prior to the building of the large wooden bar= ns across north america what would have been the population of Barn Swallow= s. Suitable nesting habitat would have been more limited and under much mor= e competition or predation. =0A=0ATodays modern barns are made of metal whi= ch are almost impossible to attach nest to and are much more BIO secure tha= n the wooden barns of our forefathers.=A0=A0The old brick chimneys that=A0o= nce abandoned, provided excellent habitat for the swifts are now falling in= disrepair or are destroyed in site clean up. Both of these structures did = not exist before the industrial age and are becoming limited now thus maybe= populations of these species are actually returning to more normal levels.= =0A=0AOwner of a wooden barn with 6 barn swallow nests=0A=0ARob Woods=0AGeo= rgefield NS ---1053708885-1515909496-1373559949=:20842 Content-Type: text/html; charset=iso-8859-1 Content-Transfer-Encoding: quoted-printable <html><body><div style=3D"color:#000; background-color:#fff; font-family:ti= mes new roman, new york, times, serif;font-size:12pt"><div><span></span></d= iv><div>Not to take away from the rapid decline that these species and othe= rs are experiencing, I have wondered did these two species first benefit fr= om mankind as the are both strongly associated with man made objects. Were = their numbers from the peaks 30-40 years ago actually inflated due to man m= ade structures being available. Prior to the building of the large wooden b= arns across north america what would have been the population of Barn Swall= ows. Suitable nesting habitat would have been more limited and under much m= ore competition or predation. </div><div> </div><div>Todays modern bar= ns are made of metal which are almost impossible to attach nest to and are = much more BIO secure than the wooden barns of our forefathers. T= he old brick chimneys that once abandoned, provided excellent habitat for the swifts are now falling in disrepair or are destroyed in si= te clean up. Both of these structures did not exist before the industrial a= ge and are becoming limited now thus maybe populations of these species are= actually returning to more normal levels.</div><div> </div><div>Owner= of a wooden barn with 6 barn swallow nests</div><div> </div><div>Rob = Woods</div><div>Georgefield NS</div><div> </div><div> </div> = ; </div></body></html> ---1053708885-1515909496-1373559949=:20842--
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Index of Subjects