▁black ▁wing ▁tips . ▁Its ▁bill ▁is ▁pale ▁grey - green ▁with ▁a ▁pale ▁yellow ▁upper ▁r idge , ▁and ▁a ▁bright ▁yellow ▁tip ▁on ▁the ▁upper ▁mand ible , ▁and ▁a ▁dark ▁spot ▁on ▁the ▁tip ▁of ▁the ▁lower ▁mand ible . ▁The ▁ju ven iles ▁have ▁more ▁extensive ▁grey ▁areas ▁and ▁a ▁blue - gre y ▁bill ▁with ▁black ▁tips ▁on ▁both ▁mand ibles . ▁It ▁can ▁be ▁distinguished ▁from ▁the ▁Ch ath am ▁al bat ross ▁by ▁its ▁larger ▁size ▁and ▁grey ▁bill , ▁and ▁from ▁the ▁sh y ▁al bat ross ▁by ▁the ▁gre yer ▁head . ▁Such ▁differences ▁can ▁be ▁difficult ▁to ▁pick ▁out ▁at ▁sea , ▁however , ▁and ▁this ▁explains ▁the ▁under - re presentation ▁of ▁this ▁species ▁in ▁at - se a ▁surve ys . ▁ ▁Be havior ▁ ▁Fe eding ▁Sal vin ' s ▁al bat ross ▁fe eds ▁mainly ▁on ▁fish ▁and ▁ce phal op ods . ▁ ▁Re production ▁ ▁It ▁bre eds ▁mainly ▁on ▁small ▁rock y ▁islands ▁with ▁little ▁veget ation , ▁and ▁the ▁nest ▁is ▁a ▁ped est al ▁made ▁of ▁mud , ▁fe athers , ▁and ▁bird ▁b ones . ▁A ▁single ▁egg ▁is ▁laid ▁in ▁September , ▁and ▁inc ub ated ▁by ▁both ▁parents ▁until ▁early ▁November . ▁The ▁ch icks ▁f ledge ▁after ▁about ▁ 4 ▁months . ▁ ▁Range ▁and ▁habitat ▁The ▁Sal vin ' s ▁al bat ross ▁bre ed ▁colonial ly ▁on ▁three ▁dispar ate ▁island ▁groups ▁in ▁the ▁Southern ▁Ocean , ▁Î