▁the ▁ 1 9 6 0 s , ▁bald ▁e ag les ▁could ▁no ▁longer ▁be ▁found ▁on ▁any ▁of ▁the ▁Channel ▁Islands . ▁ ▁, ▁there ▁were ▁five ▁bre eding ▁pairs ▁on ▁Santa ▁Cruz ▁Island , ▁two ▁on ▁Santa ▁Rosa , ▁and ▁one ▁on ▁An ac apa , ▁and ▁a ▁total ▁of ▁over ▁ 4 0 ▁bald ▁e ag les ▁on ▁the ▁northern ▁Channel ▁Islands . ▁ ▁Between ▁ 2 0 0 2 ▁and ▁ 2 0 0 6 , ▁the ▁Channel ▁Islands ▁National ▁Park ▁( in ▁conj unction ▁with ▁partner , ▁Institute ▁for ▁Wild life ▁Studies ) ▁introduced ▁si xty - one ▁young ▁bald ▁e ag les ▁to ▁the ▁northern ▁Channel ▁Islands , ▁using ▁a ▁" h ack ing " ▁process ▁of ▁keeping ▁ 8 ▁weeks ▁old ▁e ag les ▁in ▁one ▁of ▁two ▁hack ▁to wers ▁on ▁Santa ▁Cruz ▁Island , ▁until ▁at ▁age ▁three ▁months , ▁they ▁were ▁ready ▁to ▁fly . ▁On ▁the ▁Channel ▁Islands , ▁where ▁large ▁trees ▁are ▁scar ce , ▁bald ▁e ag les ▁have ▁built ▁n ests ▁on ▁cl iff ▁faces , ▁rock ▁sh el ves ▁and ▁shall ow ▁cl iffs , ▁as ▁well ▁as ▁in ▁island ▁p ines ▁and ▁Tor rey ▁p ines . ▁One ▁pair ▁even ▁attempted ▁nest ing ▁in ▁a ▁grass land ▁on ▁Santa ▁Cruz ▁Island . ▁In ▁ 2 0 0 6 , ▁for ▁the ▁first ▁time ▁in ▁over ▁ 5 0 ▁years , ▁a ▁bald ▁e agle ▁h atch ed ▁on ▁Santa ▁Cruz ▁Island . ▁ ▁Because ▁nest ing