A pet cockatiel that was caught on camera playing a game of “peekaboo” with a nest full of his baby brothers is proving that birds do have loving instincts. Turkish-born professional cockatiel breeder Tolga Sezdi, 27, has had 9-month-old Çapkın since the bird was born. When Çapkın grew curious about one of Sezdi’s latest broods,…