The term 'IBIS' cousin' refers to two species of birds that are closely related to the IBIS. The first is the HERON, which is a large wading bird with long legs and a long neck. It is found in many parts of the world, including North America, Europe, Asia, and Africa. The second is the EGRET, which is a smaller wading bird with white plumage. It is found in wetlands and coastal areas around the world. Both the HERON and the EGRET are members of the Ardeidae family, which also includes the IBIS.