Nectar sources are plants that produce sweet liquid which is used by bees and other insects to make honey. Two common nectar sources are bosc pears and pears. Bosc pears are a type of pear with a long neck and a brownish-yellow skin. They are known for their sweet, juicy flesh and are often used in baking and cooking. Pears are a type of fruit with a round shape and a yellow or green skin. They are also known for their sweet flavor and are often eaten raw or used in desserts. Both bosc pears and pears are popular nectar sources for bees and other insects.