Got less then 8 min. blue jays and robins do not interbreed. assuming that blue jays and robins share the same habitat, describe the possible conditions that keep these birds reproductive isolated

If a species cannot reproduce then it will die out. This depends on the climatic conditions of the region. If there is a natural disaster for example, it will affect a species' ability to reproduce. This reduces the number of diverse species on earth. Biodiversity is the recognised variety of different types of life found on the earth. It also measures the variety of number and variety of plants, animals and other organisms found in different ecosystems. 

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Very minute and important evidence needs to be collected in order together detail and figure out what had happened