5 , ▁the ▁year ▁in ▁which ▁the ▁events ▁of ▁W ings ▁for ▁My ▁Fl ight ▁take ▁place , ▁only ▁ 3 2 4 ▁pairs ▁of ▁per egr ine ▁fal cons ▁were ▁known ▁to ▁res ide ▁in ▁North ▁America , ▁with ▁only ▁seven ▁pairs ▁in ▁the ▁Rock y ▁Mountains ▁region , ▁and ▁one ▁at ▁Ch im ney ▁Rock , ▁a ▁prominent ▁rock ▁formation ▁in ▁south western ▁Colorado . ▁ ▁During ▁the ▁per egr ine ▁fal con ▁decl ine , ▁Hou le ▁studied ▁bi ology ▁at ▁Colorado ▁College ▁in ▁Colorado ▁Spr ings . ▁The ▁institution ' s ▁block ▁sched uling ▁system ▁meant ▁that ▁Hou le ▁had ▁fewer ▁classes ▁each ▁day , ▁allowing ▁her ▁to ▁travel ▁frequently ▁to ▁experience ▁various ▁e cos ystem s ▁in ▁addition ▁to ▁her ▁academic ▁studies . ▁Upon ▁leaving ▁college , ▁Hou le ▁began ▁working ▁for ▁the ▁Colorado ▁Division ▁of ▁Wild life , ▁and ▁her ▁first ▁field ▁assignment ▁was ▁to ▁observe ▁per egr ine ▁fal con ▁activity ▁along ▁the ▁Rock y ▁Mountains ▁for ▁four ▁sum mers , ▁two ▁of ▁which ▁were ▁spent ▁at ▁Ch im ney ▁Rock . ▁Following ▁her ▁experience ▁with ▁the ▁per egr ine ▁fal cons , ▁Hou le ▁had ▁to ▁decide ▁whether ▁to ▁continue ▁purs uing ▁wild life ▁bi ology ▁or ▁to ▁commit ▁instead ▁to ▁her ▁passion ▁of ▁writing . ▁W ings ▁for ▁My ▁Fl ight ▁combined ▁both ▁of ▁Hou le ' s ▁interests ; ▁it ▁rec ount ed ▁her ▁observations ▁of ▁the ▁per egr ines ▁as ▁well ▁as ▁her ▁interaction ▁with ▁the ▁community ▁at ▁Ch im ney ▁Rock