132 Potapov et al. 2001: 132-137. Proceedings of the II International Conference on the Saker Falcon and Houbara Bustard, Mongolia, 1-4 July 2000. Nest site selection in Mongolian Sakers. Eugene R. Potapov* Nick C. Fox*, D. Sumya**, S. Gombobaatar**, O. Shagdarsuren** * Falcon Research Institute, PO Box 19, Carmarthen SA33 5YL, UK ** Zoology Department, Faculty of Biology, National University of Mongolia. Ìîíãîë äàõü èäëýã øîíõîðûí ¿¿ðëýõ áàéðûí ñîíãîëò Ìîíãîë îðîíä èäëýã øîíõîð íü óóë, îéò õýýð, õýýð, öºëºðõºã õýýðò ¿¿ðëýíý. Ìîíãîëûí èäëýã øîíõîðûí íýãýí îíöëîã íü õ¿íèé ãàðààð á¿òñýí áóþó çîõèîìîë îáüåêòóóäûã èë¿¿òýé (55.3%) ñîíãîíî (áàéãàëèéí îáüåêòîä 44.7%). Çîõèîìîë îáüåêòîä öàõèëãààí áîëîí óòàñíû øîí, õàÿãäñàí õóäàã, òºìºð çàìûí òîîñãîí æèæèã áàéøèíãèéí äýýâýð, òºìºð áåòîí áîëîîä òîìîîõîí àâòîçàìóóäûí îéðîëöîîõ àøèãëàãääàãã¿é áàéãóóëàìæóóä áàãòàíà. Çîõèîìîë áîëîí áàéãàëèéí îáüåêòóóä äýýð ¿¿ðëýñýí õîñóóäûí õóâüä øèíýýð ãàð÷ áóé àíãààõàéí òîîíä ìýäýãäýõ¿éö ÿëãàà èëýðäýãã¿é áîëîõûã 1998 îíû áèäíèé òîîëëîãûí ñóäàëãààíû ¿ð ä¿íãýýñ õàðæ áîëíî. 2000 îíä öàõèëãààí áîëîí óòàñíû øîíä ¿¿ðëýñýí èäëýã¿¿äèéí ïîïóëÿöèä øèíýýð òºð¿¿ëæ áóé çàëóó øóâóóäûí òîî öººí áàéãàà íü àíãààõàéí ¿õýë õîðîãäîë èõýññýí áîëîí V ñàðûí ýõíèé õ¿÷òýé ñàëõè øóóðãàíä ºíäã¿¿ä õàéðàãäñàíòàé õîëáîîòîé. Âûáîð ìåñò äëÿ ãíåçäîâàíèÿ ñîêîëîì-áàëîáàíîì â Ìîíãîëèè.  Ìîíãîëèè áàëîáàí ãíåçäèòñÿ â ãîðíîì, ñòåïíîì, ïîëóïóñòûííîì è ëåñîñòåïíîì ëàíäøàôòàõ. Îòñëè÷èòåëüíîé ÷åðòîé ìîíãîëüñêîãî áàëîáàíà ÿâëÿåòñÿ åãî ñïîñîáíîñòü ãíåçäèòüñÿ íà èñêóññòâåííî ñîçäàííûõ ñòðóêòóðàõ äàæå â áîëüøåì êîëè÷åñòâå (55.3%) ÷åì íà åñòåñòâåííûõ ñóáñòðàòàõ (44.7%). Èç èñêóññòâåííûõ ñòðóêòóð ãíåçäà îòìå÷åíû íà ñòîëáàõ ýëåêòðîëèíèé, à òàêæå íà çàáðîøåííûõ êîëîäöàõ, èçáóøêàõ ïóòåâûõ îáõîä÷èêîâ, íà æåëåçîáåòîííûõ êîíñòðóêöèÿõ è äàæå âáëèçè íàïðÿæåííûõ àâòîäîðîã. Ïî ðåçóëüòàòàì ó÷åòîâ 1998 ãîäà ìû íå íàøëè ñòàòèñòè÷åñêè çíà÷èìèõ îòëè÷èé ìåæäó ðàçìåðàìè âûâîäêîâ ó ïàð, ãíåçäÿùèõñÿ íà èñêóññòâåííûõ è åñòåñòâåííûõ ñóáñòðàòàõ ( F=0.968254, P = 0.5311). Îäíàêî â 2000 ãîäó ïàðû, ãíåçäÿùèåñÿ íà ñòîëáàõ èìåëè ìåíüøèé ðàçìåð âûâîäêà èç-çà áîëüøîé ñìåðòíîñòè ïòåíöîâ è ïåðåîõëàæäåíèÿ ÿèö âûçâàíûõ óðàãàííûì âåòðîì â íà÷àëå ìàÿ.