Used for

• Narrow-billed prion
• Narrow-billed whale-bird
• Pachyptila belcheri
• Slender-billed whale-bird
• Slender-billed whalebird
• Slenderbilled prion
• Thin-billed prion
• Thin-billed whale-bird
• Whale-bird, Narrow-billed
• Whale-bird, Slender-billed
• Whale-bird, Thin-billed
• Whalebird, Slender-billed