Oedicnemus is a genus of birds commonly known as thick-knees. These birds are characterized by their long legs and large, thick knees, which give them their name. They are typically found in open habitats such as grasslands and savannas, where they hunt for insects and small invertebrates. Thick-knees are nocturnal and are known for their distinctive calls, which can be heard at night. They have a unique ability to blend into their surroundings, making them difficult to spot during the day. Their large eyes are adapted for low-light conditions, enhancing their night vision.