Birth Control For Squirrels

This past year has been a great one for gray squirrels across the nation. Their population has grown to record numbers due to the ideal weather conditions from last year's warm winter, which also produced banner crops Gray Squirrel (Photo by Sage Ross/Creative Commons via Wikimedia)Gray Squirrel (Photo by Sage Ross/Creative Commons via Wikimedia)of nuts and seeds to feed the expanding population. The East Coast, Northeast, and Midwest have been especially hard hit by this cute and furry little menace.

While squirrels are an adorable favorite among neighborhoods across the United States, they cause huge headaches in the form of crop damage to farmers and gardeners, chewing through electrical wires, and stripping bark from trees. They also carry rabies, plague, and ticks infected with Lyme disease which can be transmitted to humans.

To curtail the gray squirrel population, experts feel that birth control is the best option. Since IUDs and condoms don't come small enough and would be difficult to get the little rodents to use, the next best option is an oral contraceptive. That still leaves the problem of getting the squirrels to pop a pill everyday -- which just doesn't seem likely.

Decades of research into birth control for other species has shown that injections work well for animals such as white-tailed deer. One shot and they are good to go for years. However, at a cost of $50 per squirrel to trap and dose hundreds of thousands of squirrels, this plan is prohibitively expensive and time-consuming.

That leaves just one option -- feeding the squirrels food laced with oral contraceptives. Researchers at Clemson University have been working to see if coating black sunflower seeds with an oral contraceptive. As an extension of the laboratory, the squirrels on campus are getting treated to this special nosh. 

The treated seeds are pink and probably taste a little sweeter, but the squirrels don't seem to mind. The treatment and research will continue for another year before a final determination of its efficacy. The pink dye stains the squirrels' belly fur pink to identify them as test subjects so that they can continue to be observed. 

There is a certain irony in a country considering providing squirrels with birth control where so many people are against providing contraception to the human population.

Source: National Geographic

Laurie Kay Olson
Animal News Blogger

Dec 11, 2014
by Anonymous
add comment reply

Very interested in the

Very interested in the Clemson research and would love to take part in a field study in my little neck of the woods - central Florida.

Good article, except that last line of course. Nobody that I know is actually against people using contraception except maybe some hard-core Catholics, but many people with common sense would prefer not to have to pay for someone else's contraception. It would me my view, and the view of those you are apparently criticizing, that if you want to live a life style in which you need to use contraception, then you need to be able to pay for your own choices. What you seem to be asking for would equate to me saying that I want to live in a million dollar home but I want others to pay for it for me. My point is that everyone needs to learn how to take responsibility for their own choices. Why should I have to "provide" for anyone else's lifestyle choices?

Share Your Thoughts!

To prevent automated spam submissions leave this field empty.