The Black-capped Kingfisher often perches conspicuously on exposed poles. This species is common in mangroves and other coastal waters. The Black-capped Kingfisher performs fast and direct flight with whirring wings. The Black-capped Kingfisher utters a tremulous “tr-ee-o”.
On take-off, it gives a piercing alarm call. It usually gives ringing, high-pitched cackling “kikikikikiki”. Source: oiseaux-birds.com