1. relating to or denoting birds of the order Passeriformes, which includes perching birds and songbirds
Usage: ornithological

1. a bird of the order Passeriformes; a perching bird or songbird
Usage: ornithological

Examples

• Most passerine birds have three toes pointing forward and one backward.
• The robin is a common passerine found in many backyards.
• Passerine species make up more than half of all bird species.
• The ornithologist studied the migration patterns of various passerines.
• Cardinals and finches are both passerine birds.
• The passerine’s ability to perch comes from specialized foot tendons.