Here are some adaptations of particular finches and the finches as a whole. These adaptations would be the beak, the behavioral adaptation of a tool using finch, and lastly, the warbler finches feather color.
The first adaptation, its beak, mostly evolved recently, in the year of 1977. In the Galapagos, that year there was a very strong drought that made some of the vegetation dried out, taking seeds, fruits, and other sources of food with it. The few soft and small seeds left were quickly eaten by the birds, so only the hard, big, tough seeds remained, which the finches never normally ate. This change started natural selection, or survival of the fittest, which lead to the death of the small finches with smaller and less powerful beaks. The birds with bigger beaks survived, and the rest adapted by having developed strong and big beaks, or developed beaks that allow them to use tools to reach their food.
The second adaptation is tool use, and this is a behavioral adaptation. The finches that use tools, like the mangrove and woodpecker finches have adapted their behavior based on finding their food, which implies that they have higher foraging skills and that they have a higher intelligence, even though when scientists tested all finches, they were found to have the same level of cognitive understanding. All that happened is that these 2 different finches behaviorally adapted differently to their environment by starting to use tools to find and eat their food so that they wouldn't die out as some of the other finches did in the drought of 1977 in the Galapagos.
The warbler finch doesn't have vibrant colors in its feathers as other birds do, but instead its colored beige, light brown, and grey. This is a variation from the other finches because some of them have jet-black plumage, or bright orange beaks, but this bird has completely dull colors. It adapted this way so that it could camouflage from the predators, such as the Lava herons, or the Galapagos hawks. It has also adapted its plumage to this color so that it can blend in with the branches used for its nest while the eggs still aren't hatched.
The first adaptation, its beak, mostly evolved recently, in the year of 1977. In the Galapagos, that year there was a very strong drought that made some of the vegetation dried out, taking seeds, fruits, and other sources of food with it. The few soft and small seeds left were quickly eaten by the birds, so only the hard, big, tough seeds remained, which the finches never normally ate. This change started natural selection, or survival of the fittest, which lead to the death of the small finches with smaller and less powerful beaks. The birds with bigger beaks survived, and the rest adapted by having developed strong and big beaks, or developed beaks that allow them to use tools to reach their food.
The second adaptation is tool use, and this is a behavioral adaptation. The finches that use tools, like the mangrove and woodpecker finches have adapted their behavior based on finding their food, which implies that they have higher foraging skills and that they have a higher intelligence, even though when scientists tested all finches, they were found to have the same level of cognitive understanding. All that happened is that these 2 different finches behaviorally adapted differently to their environment by starting to use tools to find and eat their food so that they wouldn't die out as some of the other finches did in the drought of 1977 in the Galapagos.
The warbler finch doesn't have vibrant colors in its feathers as other birds do, but instead its colored beige, light brown, and grey. This is a variation from the other finches because some of them have jet-black plumage, or bright orange beaks, but this bird has completely dull colors. It adapted this way so that it could camouflage from the predators, such as the Lava herons, or the Galapagos hawks. It has also adapted its plumage to this color so that it can blend in with the branches used for its nest while the eggs still aren't hatched.