No two species in the same place can earn their living in exactly the same way. One will always outcompete the other. Groups of similar species avoid treading on each other’s toes by specialising to fill subtly different niches. A single Caribbean forest, for example, may contain multiple species of arboreal, insectivorous Anolis lizards. But each specialises in different insect prey at different heights off the ground. Resource partitioning is part of the reason we have so many species. SB
Anolis lizards share space by specialising.