▁ha w k ▁fe eds ▁on ▁a ▁large ▁variety ▁of ▁pre y . ▁They ▁feed ▁on ▁everything ▁from ▁other ▁birds ▁to ▁m amm als ▁and ▁re pt iles . ▁This ▁shows ▁that ▁r uf ous - ta iled ▁ha w ks ▁have ▁a ▁very ▁broad ▁di et ▁that ▁is ▁similar ▁to ▁the ▁red - ta iled ▁ha w k . ▁Fig u ero a ▁et ▁al . ▁( 2 0 0 0 ) ▁reported ▁the ▁r uf ous - ta iled ▁ha w k ▁feed ing ▁on ▁southern ▁lap wing , ▁Norwegian ▁rat , ▁European ▁ha re , ▁red - bre asted ▁me adow l ark , ▁Chile an ▁f lick er , ▁short - ta iled ▁s nake , ▁and ▁even ▁a ▁few ▁un ident ified ▁be et les . ▁Fe eding ▁or ▁pre y ▁capture ▁was ▁also ▁recorded ▁to ▁happen ▁in ▁forest ▁and ▁in ▁par ries . ▁ ▁Bre eding ▁ ▁R uf ous - ta iled ▁ha w ks ▁have ▁a ▁longer ▁recorded ▁nest ling ▁period ▁compared ▁to ▁other ▁species ▁of ▁B ute o . ▁R uf ous - ta iled ▁and ▁red - ta iled ▁ha w ks ▁have ▁around ▁the ▁same ▁nest ling ▁periods : ▁around ▁ 4 9 ▁days ▁for ▁r uf ous - ta iled ▁ha w ks ▁compared ▁to ▁ 4 5 – 4 6 ▁days ▁for ▁red - ta iled ▁ha w ks . ▁The ▁egg ▁cl utch ▁size ▁of ▁a ▁r uf ous - ta iled ▁ha w k ▁has ▁only ▁been ▁reported