how many types of finch species are there
Darwin's finches Darwin's finches (also known as the Galápagos finches) are a group of about fifteen[1][2][3] species of passerine birds.[4] They are well known for their remarkable diversity in beak form and function.[5] They are often classified as the subfamily Geospizinae or tribe Geospizini. They belong to the tanager family and are not closely related to the true finches. The closest known relative of the Galápagos finches is Tiaris obscurus.[6] They were first collected by Charles Darwin on the Galápagos Islands during the second voyage of the Beagle. Apart from the Cocos finch, which is from Cocos Island, the others are found only on the Galápagos Islands.
Eastern bluebird Fruits are especially important when insects are scarce in the winter. Some preferred winter food sources include dogwood, hawthorn, wild grape, and sumac, and hackberry seeds. Supplemental fruits eaten include black raspberries, bayberries, fruit of honeysuckle, Virginia creeper, eastern juniper, and pokeberries. Bluebirds feed by perching on a high point, such as a branch or fence post, and swooping down to catch insects on or near the ground. The availability of a winter food source will often determine whether or not a bird will migrate. If bluebirds do remain in a region for the winter, they group and seek cover in heavy thickets, orchards, or other areas in which adequate food and cover resources are available.