Here's what's debuting
on nature's stage in Chicago Wilderness
JUNE/JULY
Bobolink
The papa bobolinks of Chicago Wilderness will be busy
this July. Highly polygamous, the male identified
by his prominent butter-colored nape will assist
in feeding all the offspring in his territory. They might
be his.
Bobolinks don't fly directly to their
nests. To maintain secrecy, bobolink parents fly to a
spot near their nests on the ground, and then proceed
to walk to their waiting chicks. Until the young ones
learn to fly, the adults will collect nutritious beetles,
spiders and grasshoppers for their meals. As the youngsters
mature, the more typical bobolink meal of grass seeds
will be introduced into their diet.
Turtle Intelligence
In one of the dramatic moments of twentieth-century science,
animal behaviorist Robert M. Yerkes sent spotted turtles
through a maze to test a turtle's ability to learn. His
research seemed to indicate that spotted turtles learned
the route as quickly as rats. (He didn't try hares.) Perhaps
when you think of their local preferred habitat
complex sedge meadows and vegetated shallow wetlands
it makes sense that they need to find their way through
the underwater labyrinth of sedge hummocks and cattail
stalks.
We have only a few small populations
of spotted turtles in our region, which is the western
edge of their sporadic range. During the summer, these
small, dark turtles can be "spotted" (pun intended)
on cattail mats, soaking up the warm, early morning sun.
JULY/AUGUST
Bobsy Cats
During midsummer, while my two boys are taking their first
solo trips around our neighborhood, the twin bobcat kittens
are doing the same that is, making unescorted trips
from their den and exploring the sun-dappled ravine they
call home.
Lately the energetic kits have been
learning the hard way that most bugs taste gross. They
are diligent students and will be living on their own
by the start of winter (the bobcats, certainly not my
boys). Though still uncommon, the adaptable bobcat has
been gradually able to expand its range. According to
state experts, since 1985, our native wildcat has been
verified in 99 of 102 Illinois counties including all
those in Chicago Wilderness. Few of us see them, but they're
here. That is so cool.
Glass Lizard
As further evidence of the wide range of fauna that call
Chi Wild home, this summer we'll have a few baby western
slender glass lizards hatching into our little part of
the world. Superficially resembling snakes (but with ear
openings and blinking eyes), our local limbless lizards
are found in the northern edges of the Kankakee sand area
of Will County and in suitable habitat near Gary, Indiana.
Typically a southern species, some specimens were even
collected from the ancient beach ridges of the Evanston/Rogers
Park area by the great Field Museum herpetologists Walter
Necker and Karl P. Schmidt in the 1930s. This kind of
lizard doesn't live there any more.
Young glass lizards grow amazingly
fast during their first summer. Less than five inches
long when hatched, they double their length in a matter
of weeks as they hungrily devour earthworms and soft,
larval invertebrates.
Pitcher Plant
Our meat-eating plants are nowhere near as large or intimidating
as those once fed by Morticia Addams. But to a swarm of
summer gnats, the cup of the pitcher plant is a death
chamber. Attracted by the sweet smelling water that collects
in the "pitcher," tiny invertebrates slip into
the deadly pool where the plant's digestive enzymes break
down the victim's body.
Pitcher plants are endangered in Illinois,
but they can be found in the bogs of Lake and McHenry
Counties and the dunes along the north Indiana lakeshore.
If you find some, don't spread the word. Some ethically
challenged people steal them a major threat to
the species in this region.
AUGUST/SEPTEMBER
Deep Purple
Elderberry is a well-known shrub that grows in our woodlands.
During early summer, the plant produces delicate white
flowers on top of a flat-topped cluster. Later in the
season, small green berries will ripen into a dark red
fruit.
There are many practical uses for
the plant, although I have to believe one purported benefit
seems to be a nasty prank. In some circles, the juice
from crushed elderberries has been promoted as an alternative
to "chemical" mosquito repellents such as those
containing DEET. This would be welcome news to many people,
except for one thing: the dark purple juice leaves a dark
purple stain. So while you might be free of annoying biting
insects, your skin would be the color of a plum.
Blue Cheer
Urban development has not been good to one of our prettiest
late-summer wildflowers, the fringed gentian. Only fifty
years ago, tens of thousands of these striking flowers
thrived in a small marsh in Gary, Indiana. That marsh
is gone, a victim of progress. Huge numbers were also
grabbed by florists, who weren't too careful whose property
they were on. But that was then. They've been recovering
and can be found by the thousands in Illinois Beach State
Park and other wet prairie areas. Their delicate petals,
which have been described as being like "blue eyelashes,"
will appear around Labor Day, blooming throughout the
month.