Biology, 06.12.2019 02:31 eduardo60

Black-bellied seedcrackers have either small beaks (better for eating soft seeds) or large beaks (better for hard seeds). there are no seeds of intermediate hardness; therefore, which kind of selection acts on beak size in seedcrackers

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Black-bellied seedcrackers have either small beaks (better for eating soft seeds) or large beaks (be...

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