Due to differences in their eating habits and resources, large ground finch and the woodpecker finch can live successfully on the same island.
What are the criteria for coexistence?
The criteria for coexistence are as follows:
- If two or more species develop partitioning of resources.
- Differentiation of niche.
- Mechanisms involve predation and parasitism.
The required food for woodpecker finch is small insects and plant woods, while the required food for a large ground finch is plant seeds which usually migrates at the time of seed dispersal.
Both these species do not compete for the same resources, and therefore, both of them are successfully living on the same island.
According to the law of competitive exclusion, no two species can coexist in the same niche for a long time. If they do so, there will be competition for similar demands of food and space.
Therefore, due to differences in their eating habits and resources, large ground finch and the woodpecker finch can live successfully on the same island.
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