In Some Parts Of Country, A Shortage Of Acorns

Naturalists in some areas of the country have noticed a lack of acorns this year and scientists are at a loss to fully explain why. Naturalist Jennifer Soles of the Gulf Branch Nature Center in Arlington, Va., says it will be a "really hard" winter for squirrels.

Copyright © 2008 NPR. For personal, noncommercial use only. See Terms of Use. For other uses, prior permission required.

ROBERT SIEGEL, host:

From NPR News, this is All Things Considered. I'm Robert Siegel. On the Gulf Coast, they have hurricanes. In California, they have earthquakes and in the Midwest, floods and tornadoes. So by that standard, the environmental disasters of the East Coast tend to be more subtle, tent caterpillars, cicadas, and the occasional drought, that sort of thing. Well, this year, something truly puzzling is happening in these benign parts.

From Northern Virginia to Maryland to Pennsylvania and according to the Washington Post, all the way to Kansas and Nova Scotia, there is a mysterious shortage of acorns. Not a catastrophe just yet, unless you are a squirrel. We are reliably informed that this might as well be the Great Depression for squirrels. And to tell us more about their plight and about what's up with the oak trees, here is Jennifer Soles, a park naturalist with the Gulf Branch Nature Center in Arlington, Virginia. Hiya.

Ms. JENNIFER SOLES (Naturalist, Gulf Branch Nature Center): Hi, how are you?

SIEGEL: Fine. How bad is it for the squirrels?

Ms. SOLES: It will be a really hard winter, I think. Right now, they're doing all right. They've just eaten a lot of pumpkins. Everybody left them out at Halloween. But as we go further onto the winter, I think their plight is going to become more and more severe.

SIEGEL: When did you notice that there were no acorns around?

Ms. SOLES: I noticed a few months ago, actually, but I kept thinking that some would come along. We have a pet flying squirrel here at the Nature Center that we feed, and I was starting to look out for acorns for it. I have in my front yard in Arlington a large, white oak tree, a large red oak tree, and we've had really good acorn crops the last few years. So I was just sort of expecting to see those acorns and start collecting them, and they never arrived.

SIEGEL: What do scientists says about a year without acorns? Has this happened before?

Ms. SOLES: There are certainly years with low acorns. Oak trees go through a sort of natural cycle, where they some years produce a really heavy crop, other years produce a light crop. The heavy crop overwhelms acorn eaters, and then the light crop also knocked back the number of acorn eaters, so, you know, it's a light crop of acorns for fewer squirrels, fewer squirrels born in the spring. And there are fewer squirrels to eat the acorns next year, when the oak tree produces a really heavy crop. So it's normal for oak trees to produce a varying number of acorns. Not to see any is a little disturbing.

SIEGEL: Now, I want to read to you what I read on a wildlife website about squirrels. It says, the average adult squirrel needs to eat about a pound of food a week to remain healthy. They're omnivores. So they will eat such things as bird seeds, spring bulbs, tree buds, frogs, small birds, eggs, insects, insect larva, fruits, conifer cones, small children that throw sticks at them, and nuts. Are they really in trouble given that diet?

Ms. SOLES: Yes because a lot of those things aren't available during the winter months. During the winter, they really rely heavily on the acorns and other nuts they have cashed and stored. So even though like in the spring, you know, the ones that have made it will be fine in the spring. They can eat the buds. They can eat the eggs, grubs and caterpillars and things like that. It's getting through this lean winter months which are always the hardest.

SIEGEL: Now, especially someone who keeps a pet flying squirrel, as you do...

Ms. SOLES: Yes.

SIEGEL: You would find a world without squirrels a horrible thought, but it sounds like it wouldn't be too bad for the birds or the frogs.

Ms. SOLES: Well, you know, there's always a balance. You know, mice eat acorns, and when you don't have the mice and the squirrels and the chipmunks, that reduces the number of hawks and owls. So, it's all sort of connected up.

SIEGEL: Since you haven't found a lot of acorns on your front lawn or anywhere else for that matter in the northeast. What are you feeding the flying squirrel? What is the flying squirrel's name, by the way?

Ms. SOLES: Mr. Flying Squirrel is his only name.

SIEGEL: Mr. Flying Squirrel.

Ms. SOLES: We are feeding him mushrooms and berries, like blueberries and currants. We feed him meal worms and other bugs, and we feed him nuts.

SIEGEL: Nuts.

Ms. SOLES: Nuts in the shell. Like all rodents, his teeth will keep growing as long as he's alive, and he has to wear them away by chewing on hard things like nut shells, and so...

SIEGEL: So he needs hard food to survive.

Ms. SOLES: Yeah.

SIEGEL: And the squirrels in the wild...

Ms. SOLES: Yeah.

SIEGEL: Equally so.

Ms. SOLES: Exactly.

SIEGEL: Jennifer Soles, park naturalist at the Gulf Branch Nature Center in Arlington, Virginia. Thanks a lot for talking with us.

Ms. SOLES: You're welcome. Thank you.

Copyright © 2008 NPR. All rights reserved. No quotes from the materials contained herein may be used in any media without attribution to NPR. This transcript is provided for personal, noncommercial use only, pursuant to our Terms of Use. Any other use requires NPR's prior permission. Visit our permissions page for further information.

NPR transcripts are created on a rush deadline by a contractor for NPR, and accuracy and availability may vary. This text may not be in its final form and may be updated or revised in the future. Please be aware that the authoritative record of NPR's programming is the audio.

Comments

 

Please keep your community civil. All comments must follow the NPR.org Community rules and terms of use, and will be moderated prior to posting. NPR reserves the right to use the comments we receive, in whole or in part, and to use the commenter's name and location, in any medium. See also the Terms of Use, Privacy Policy and Community FAQ.