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This is Scientific Americans' 60-second science. I'm Jason Goldman. Got a minute?

More than half of U.S. household provide food for birds.

It's a billion-dollar industry.

Now a study asks whether the same feeders that attract birds

also attract predators that eat the eggs and newly hatched nestlings of those birds.

We imagine that this food resource on the landscape could have a couple different effects on relationships between nest predators and their prey.

Ohio State University researcher Jennifer Malpass.

On the one hand, you could see that the food might be attracting predators to certain areas and that could increase

nest predation risk.

However, as you said, our predators may be exploiting these food resources and especially if you've

got, you know, a good, predictable food resource on the landscape that's easy for predators

to access.

You could imagine that they could switch to those anthropogenic or those human-provided foods

like bird feeders, and that could perhaps lessen nest predation risk.

Which could also be a problem because predators help control the population.

Malpas and her team looked at the nests of American Robbins and Northern Cardinals in seven Ohio

neighborhoods. They noted the presence or absence of feeders and recorded potential nest

...