I am gathering information on 50 nature-oriented summer camps around the country. So far, the programs seem to all have a common thread: activities are experiential and place-based, focusing on the resources unique to the site. For example, the Center for Alaskan Coastal Studies’ Junior Naturalist Science and Discovery Camp has hands-on activities in a spruce forest, a wildflower meadow, and a wetland, about moose, and during a boat trip to an intertidal bay field station. The Delaware Museum of Natural History’s Summer Camp facilitates activities under themes such as bugs, dinosaurs, geology, comparative anatomy, science tricks – and most curiously – the natural history of pizza.
Saturday, December 6, 2008
I Live for Summer Camp
Thursday, September 18, 2008
The Park Tree
The seeds are edible. They are so difficult to extract that you probably won't find them to be worth the trouble, but sit back on a park bench and watch how hard a gray squirrel will work to get those seeds.
The fruits smell like oranges and makes great pomanders. Old wives have been parking bois d’arc fruits in the corners of their kitchens for centuries to ward off bugs, and it turns out the plant may in fact have insecticidal properties. It certainly enjoys a charmed existence free from any known insect pests.
No, horses can’t eat the fruits, but you do find them planted at the edges of pastures. Prior to the invention of barbed wire, ranchers planted bois d’arc trees “horse high, bull strong, and hog tight.” Bois d’arc branches may have even inspired the inventor of barbed wire.
Bois d’arcs are a living piece of history. Peter Custis wrote the first scientific description of the trees in 1806. They were closely associated with the indigenous Osage people. Osage men constructed their bows from these trees, which accounts for the common names, Bois d'arc ("wood of bow"), and Osage orange. The wood was useful (and useful equals valuable) so it was traded for other items amongst Native American groups.
According to the Virginia Big Tree Program, bois d’arc trees live an average of 75 years. The oldest one known to exist is the American Champion Osage Orange Tree at Patrick Henry's Red Hill, and it’s estimated to be between 200 and 300 years old. It’s on my list of things to see next time I’m in Virginia. I wonder if it’s a girl or a boy. Bois d’arc trees have flowers with pistils (female reproductive organs) or stamens (male reproductive organs), so they are either male or female. Only the females produce the fruits.
Maybe the bois d’arc is not the quintessential city park tree, but it’s got so much character.
By the way, Bois d'arc fruits are ripe now (August-September), so gather your air fresheners/bug repellents while you can!
Sources:
Great Plains Nature Center
Discovering Lewis and Clark
Red Hill Patrick Henry National Memorial
Hedgeapple.com
Virginia Big Tree Program
University of Florida Environmental Horticulture Department
The U.S. Forest Service
Wikipedia - Osage Orange, Maclura pomifera
Wikipedia - Osage people
Freeman and Custis symposium paper
Freeman and Custis book
Thursday, September 4, 2008
Saint Paul's Cicada
Monday, August 18, 2008
The Dog Days
During this time, a cacophony of singing cicadas reverberates through the forest. There are a number of different species out there, and you can actually tell them apart by their sound alone (which is good, because how many have you ever seen?) Some species start singing in May, while others are still crooning well into the fall, but since the majority of Tibicen species are heard from mid-July to late-August, they are all called “dog day” cicadas.
Each adult dog day cicada lives only a few weeks, and spends its time sucking juices from tender twigs, mating, and producing hundreds of eggs. Those eggs take a month or so to hatch. The hatchlings, called nymphs, then live underground for up to a decade. These cicadas are not "annual" at all, but since every year is somebody's tenth birthday (or hatchday), we can hear dog day cicadas buzzing in the treetops every July and August.
If you are interested in reading more about the astronomical dog days, check out Wikipedia, Cornell University’s Astronomy Department, and this guy’s website.
To find out which cicadas are singing when – and to hear their songs – check out the University of Florida’s Institute of Food and Agricultural Service, and the University of Connecticut’s Ecology and Evolutionary Biology Department. Other good cicada sources include Wikipedia, Cicadamania and this guy's website.
Friday, July 11, 2008
Skinks
There’s a reason these sleek, smooth-scaled herps get mistaken for snakes: the two groups have some similarities. Other than having ear holes, the skink’s head looks just like a snake’s head. The skink’s body is streamlined and – at first glance – you might overlook those telltale legs and feet.
There are six species of skinks in Louisiana. One is found in southeastern parts of the state. Another prefers open fields. That leaves four kinds of skinks scurrying through the forests of Northwest Louisiana: coal, ground, broad-headed, and five-lined.
With an electric-blue tail, the young five-lined skink is by far the most visually stunning lizard in the forest. Obviously designed to make a predator think twice, that shockingly colored tail appears to be a bluff. After a few years the bright blue fades. The five lines fade, too, and an older individual can be mistaken for its broad-headed cousin.
Five-lined skinks are nesting now. To see them in action, scan the forest floor for fallen trees, roll a few logs back, and have a peak. You may discover a mother skink guarding a clutch of a dozen or more eggs. She will stay with them for the next few weeks until they hatch, and then she’ll eat the ones that don’t.
It’s hard out there for a skink. Raccoons, possums, foxes, snakes, and birds are all looking to make a meal out of her and her babies. So, after you've found her, please be kind and roll the log back into place.
Here are a few interesting web resources to explore:
The digital morphology library allows you to examine the animal’s skull inside and out.
Brandon’s Herb Adventure is a series of You Tube videos showcasing reptiles and amphibians found in the Pensacola, Florida area. Brandon is a 15-year-old, walking, talking reptile and amphibian field guide.
If you want a list of all the herps in Louisiana, this one from the Louisiana Gulf Coast Herpetelogical Society, is in a nice portable format, and includes both scientific and common names.
If you're old school like me and want a book to flip through, this one is the most complete resource available for the state (although it's out of print and in limited supply, and old enough that some of the scientific names have changed since its publication).Monday, April 14, 2008
First of Season
My FOS Baltimore Oriole this year was April 10.
This year, he arrived at his cluster of Sycamore trees to find them overpopulated with his cousins, the Red-winged Blackbirds. I wonder if he found that to be strange. He will mate and nest in one of those trees (the one in my neighbor’s front yard, most likely). His wife will construct a dainty sock and hang it from a branch that cannot bear the weight of a gray squirrel, at the tippy top of the tree. They will eat insects, nectar, and fruit. They will occasionally drink from my hummingbird feeder, but they have yet to shop at a fruit feeder I put out just for them. Usually, they stay so high in the trees that I have to hurt my neck to try to see them.
Even though orioles and blackbirds are in the same family (as in Kingdom, Phylum, Class, Order, Family, Genus, Species), they have their own niches. Red-winged Blackbirds don’t migrate. They like to hang out in the tall grasses in fields or at water edges. During breeding time, a male will have a dozen or more wives. They often put their nests on or close to the ground. They eat insects and seeds. The ones in my yard frequent my sunflower feeder. In the fall and winter, they flock together by the millions, but Red-winged Blackbirds still roost in small groups in the spring and summer.
My house is not that far from the marshy Quail Creek and two old river bayous. In the past, I have had the occasional flock of Red-winged Blackbirds to visit and empty out my feeder. This year is different. This year they aren’t just stopping by once in a while, they’re making camp.
Why are they sticking around? Kohl’s, JC Penney, Dick’s Sporting Goods TGI Fridays’, Lowe’s, Cost Plus World Market, Linens and Things, Pier 1, Starbucks, Romano’s Macaroni Grill, PETCO, Krispy Kreme, DSW Shoes, P.F. Chang’s, Buffalo Wild Wings, Logan’s Roadhouse, Circuit City, Raising Cane’s…I may be forgetting a few. Shreveport is growing! And it just grew into the fields between Youree Drive and East Kings Highway, where the red-winged blackbirds had lived.
http://www.stirlingprop.com/uploads/122906_BigYearforLocalRetail_ShreveTimes.pdf
http://kscl.blogspot.com/2007_08_01_archive.html
I hope my Baltimore Oriole doesn’t mind sharing his seven sycamore trees with a few hundred distant relatives.
Saturday, March 15, 2008
Field Journal for March 14, 2008
Viola sp. (I will find out which species and edit here.)
The violets are booming! And getting a lot of attention from some duskywings.
Cardamines, Cardamine bulbosa
The cardamines have peaked and are beginning to fade. (I had no luck getting a Falcate Orangetip to pose for my camera, but they were out in force, visiting both the cardamines and the violets.)
Blueberry bushes. I do not know if they are Vaccinium elliotii or young Vaccinium arboretum. I know both species have been recorded in Walter B. Jacobs Memorial Nature Park. I will probably need to sit down with a dichotomous key to be sure.
Spicebush flowers are opening up.
Pawpaw, Asimina trioba