Survivorship curve

A survivorship curve is a graph that shows us how many organisms in a population survive over a certain period of time. It can help us understand how well an organism is able to survive and thrive. For example, if we know that only 10% of a species of bird survived for five years, we can see that this species of bird is not doing very well in terms of survival. The graph might look like a big hill that starts high and then decreases over time, showing us the percentage of birds that are still alive after different lengths of time.