Density, numbers and probable origin of Northern Hawk owls Surnia ulula in southern Norway during the 2016 irruption
Svein Dale Artikkel Engelsk
*0011257033 *008170405s2017 xx# 000 0 eng *019 $bk *08230$a598.97 *100 $aDale, Svein$4aut$_48155200 *245 $aDensity, numbers and probable origin of Northern Hawk owls Surnia ulula in southern Norway during the 2016 irruption *300 $aS. [1]-13 : ill. *500 $aVitenskapelig artikkel *520 $aOm haukugler *650 $aUgler$2norart$_57773900 *651 $aSør-Norge$_13996000 *773 $tOrnis norvegica [elektronisk ressurs]$gVol. 40 (2017)$x1892-9737 *8564 $uhttps://doi.org/10.15845/on.v40i0.1079 *999 $z1700610754$anorart:1700610754 ^