Red-crested cardinals are common in the lowlands of the Hawaiian Islands but they are not native to the islands, they were introduced to Hawaii in the 1930s. They are also known as Brazilian Cardinals.
Red-crested cardinals live in semi open areas around shrubs and trees. They are normally seen in parks and lawns and are often found in pairs or small family groups so if you see one, look around because there are likely more in the area.
Adult males and females look similar but juvenile birds have an orange-brown head and crest and their bill is black. These differences can be seen in the following photos.