ats ▁and ▁important ▁numbers ▁of ▁grey ▁and ▁har bour ▁se als . ▁ ▁Many ▁populations ▁of ▁mo or land ▁birds , ▁including ▁black cock ▁and ▁the ▁famous ▁red ▁gr ouse , ▁live ▁here , ▁and ▁the ▁country ▁has ▁intern ation ally ▁significant ▁nest ing ▁grounds ▁for ▁se ab ird s ▁such ▁as ▁the ▁northern ▁g ann et . ▁The ▁golden ▁e agle ▁has ▁become ▁a ▁national ▁icon , ▁and ▁white - ta iled ▁e ag les ▁and ▁o spre ys ▁have ▁recently ▁re - colon ised ▁the ▁land . ▁The ▁Scottish ▁cross b ill ▁is ▁the ▁only ▁en demic ▁verte br ate ▁species ▁in ▁the ▁British ▁Is les . ▁ ▁Scotland ’ s ▁se as ▁are ▁among ▁the ▁most ▁bi olog ically ▁product ive ▁in ▁the ▁world ; ▁it ▁is ▁estimated ▁that ▁the ▁total ▁number ▁of ▁Scottish ▁marine ▁species ▁exceed s ▁ 4 0 , 0 0 0 . ▁In cluded ▁in ▁the ▁country ' s ▁ocean ▁ ▁invent ory ▁are ▁the ▁Dar win ▁M ounds , ▁are ▁an ▁important ▁area ▁of ▁cold ▁water ▁cor al ▁re ef s ▁discovered ▁in ▁ 1 9 8 8 . ▁In land , ▁nearly ▁ 4 0 0   gen et ically ▁distinct ▁populations ▁of ▁Atlantic ▁Sal mon ▁live ▁in ▁Scottish ▁rivers . ▁Of ▁the ▁ 4 2   species ▁of ▁fish ▁found ▁in ▁the ▁country ' s ▁fresh ▁waters , ▁half ▁have ▁arrived ▁by ▁natural ▁colon isation ▁and ▁half ▁by ▁human ▁introduction . ▁ ▁Only ▁six ▁am ph ib ians ▁and ▁four ▁land ▁re pt