GMAT Reading Comprehension (RC) | Re: Grassland songbirds often nest in the same grassland-wetland

1)"small mammals such as mice and ground squirrels are important in the diet of many waterfowl-nest predators and can themselves be important predators of songbird nests". "Neither raccoons nor striped skunks consume ground squirrels, which are important predators of songbird nests."
It means the ground squirrles are not eaten by racoons or skunks but they play a very important role in the diet of many waterfowl-nest predators.So, if you combine above two statements you can
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