December 16, 2016 at 7:04 am (birds, botany, mammals, plant-eating insects, restoration)
Tags: black duck, Epargyreus clarus, Euonymus alatus, mallard, opossum, pintail, silver-spotted skipper, St. James Farm, white-crowned sparrow, winged euonymus
by Carl Strang
This blog has been on hiatus while I work on my annual research summary documents, but I have been paying regular visits to St. James Farm Forest Preserve, the site I monitor and where I soon will begin as volunteer steward. Today’s entry shares some photos from recent weeks.
Winged euonymus adds color to the autumn scene, but is an invasive shrub that will need to be removed at some point.
As leaves come off the trees, bird nests are revealed. This oriole nest had a significant content of synthetic fibers, including fishing line from the nearby ponds. The fuzzy white object hanging below the nest is a fishing lure, the hook not quite visible at this angle.
This silver-spotted skipper still was active on November 16.
The opossum lay dead in the center of a trail, also on November 16. Cause of death was not evident.
Late autumn migrants included this white-crowned sparrow youngster.
The most unusual stopover duck was a female pintail on the east pond.
Another duck worth noting was this male. Accompanied by a female mallard, his huge size and her identity suggest that he may be a mallard-black duck hybrid.
June 6, 2016 at 6:09 am (botany, dragonflies and damselflies, mammals)
Tags: astronomy, Culver, Gomphus quadricolor, lance-leaved violet, Mars, Maxinkuckee Wetlands, Memorial Forest, rapids clubtail, river otter, Saturn, Viola lanceolata, Winamac Fish and Wildlife Area
by Carl Strang
As Gary and I toured wild places around Culver over the weekend, we found more of interest than sulfur-winged grasshoppers.
Many wildflowers were blooming, including lance-leaved violets at the Winamac State Fish and Wildlife Area.
A number of rapids clubtails worked the sandy power line corridor at Memorial Forest.
One sad note was a road-killed otter.
I had heard that otters have returned to the Tippecanoe River. This one climbed a tributary to reach the Maxinkuckee Wetlands, and became a casualty.
No photo to show for it, but we were impressed by astronomical observations as well. While sampling the variety of Hoosier beers Gary had brought up from Indianapolis, we checked out Mars and Saturn through the spotting scope. Mars, as close as it ever gets to Earth, was a reddish disk. Much farther away, Saturn appeared as a cute little image with the rings nicely visible and separate from the planet’s main mass.
We closed the weekend by attending the local VFW Memorial Day ceremony, and visited the graves of our parents, who passed away two years ago. Then we went our separate ways home.
April 4, 2016 at 6:21 am (birds, botany, mammals, plant-eating insects, reptiles and amphibians)
Tags: Acer saccharinum, barred owl, brown-headed cowbird, bullfrog, cabbage white, Canada goose, Claytonia virginica, golden-crowned kinglet, great horned owl, green-winged teal, hooded merganser, killdeer, midland brown snake, midland painted turtle, mourning cloak, northern flicker, Nymphalis antiopa, Pelochrista, Pieris rapae, pileated woodpecker, preserve monitoring, sandhill crane, silver maple, spring beauty, St. James Farm, western chorus frog, whitetail deer, wood duck
by Carl Strang
Weather in March at St. James Farm Forest Preserve was variable, but on the whole was relatively warm with frequent rainy periods. At the beginning of the month there was a little lingering snow on the ground, and ponds were frozen, but all of this quickly was gone.
I used my old GPS unit to map my survey routes and to locate positions of previously discovered cavity trees that might harbor a great horned owl nest. One of these indeed proved to hold the nest, and the female still was present on March 25, late enough to indicate that hatched young were being brooded. Two attempts to find displaying woodcocks were unsuccessful, but during the first evening visit on March 17 I heard what I thought was a short call by a barred owl in the eastern portion of the preserve. Scott Meister reported hearing the species in the forest one evening the following week. No pileated woodpecker observations in March, but recent observations in preserves to the north along the West Branch suggest that the bird or birds seen here earlier may be wandering widely. Canada geese were down to small groups and pairs early in the month. By March 31 a nest was under incubation on the small island in the pond below the former house site.
Canada goose incubating on March 31.
Many killdeers were displaying in the restoration project area around the stream early in the month, but these were down to just a few individuals by month’s end. Bird activity generally increased as the season progressed, with the first cowbirds arriving March 8, a pair of hooded mergansers and 2 pairs of wood ducks present in the pond in the NW corner of the preserve for much of the month, sandhill crane flocks frequently passing overhead, a northern flicker and the first golden-crowned kinglets appearing on March 14, tree swallows on March 25, and two pairs of green-winged teals in the restored stream on March 26.
This hooded merganser pair may nest in one of the wood duck boxes at the northwest pond.
A shed antler found on March 17 in the forest near Winfield Road matched the buck photographed in the same area on November 1.
Someone found an old deer skull and propped it against a trailside tree.
The first snake observed on the preserve was a midland brown snake on March 29. That same day several painted turtles were sunning in the eastern pond.
Western chorus frogs began singing on March 11, and ultimately displayed in three locations. The largest number were in the fringes of the eastern pond, and many also were in two temporary ponds in the meadow north of the entrance drive. Numbers of bullfrogs, large and small, had emerged by March 21.
One of the March 21 bullfrogs.
The first butterfly of the year was a mourning cloak observed on March 21. A cabbage white appeared on March 29. The former overwinters in the adult form, the latter as a pupa. Several small brown moths were active on the forest floor on March 31. One was photographed and appears to be a tortricid, close to several similar species of Pelochrista or perhaps Eucosma.
A possible Pelochrista
Silver maples were blooming by March 11, and spring beauties by March 31.
Spring beauties were the first native herbaceous wildflowers to bloom at St. James Farm in 2016.
Restoration clearing of the forest was completed by mid-March, and a new set of stakes presumably marking the new trail route was placed in the final week.
March 21, 2016 at 6:22 am (mammals)
Tags: antlers, St. James Farm, whitetail deer
by Carl Strang
On Thursday, as I was walking through the western edge of the forest at St. James Farm Forest Preserve, I looked down and saw this:
A recently shed left antler from a whitetail deer.
I had seen and photographed two different bucks over the course of the winter, and took the above photo in hope of finding a match. I had seen both individuals at different times near where I found the shed. The two bucks were quite different, one smaller and younger than the other.
The smaller buck clearly did not match. His left antler was smaller than the one I found, and had only two major tines in addition to the brow tine.
The left antler of the larger buck had the same number of tines, and their proportions appeared to be the same as those of the shed one.
The different angles provided by these views allow a comparison of the various tines’ contours.
I conclude that the larger buck, which I saw only on November 1, still is around and is the one who dropped the antler I found.
March 4, 2016 at 6:58 am (birds, botany, mammals, restoration)
Tags: American coot, bald eagle, black walnut, Canada goose, eastern bluebird, fox squirrel, great horned owl, greenbrier, hermit thrush, Juglans nigra, mallard, mink, Norway spruce, Picea abies, pileated woodpecker, red-winged blackbird, sandhill crane, Smilax tamnoides, St. James Farm, striped skunk, white-throated sparrow, whitetail deer
by Carl Strang
Beginning in the middle of the month, I went through all of St. James Farm Forest Preserve seeking the great horned owl nest. I did not find it, but did create an inventory of 25 large tree cavities where an incubating owl might not be visible from the ground. An additional possibility would be a hawk nest in the dense top of one of the spruces. Twice I saw an owl, presumably the male if they are nesting this year, in the same north central portion of the main forest. In past observations elsewhere, the male usually perched in the vicinity of the nest. I will continue to monitor the suspect cavities, but may need to see branched young later in the season to narrow down possibilities further.
I was able to eliminate this cavity, as it was otherwise occupied.
Some photo processing in the computer makes the raccoon easier to see.
I had not seen or heard a pileated woodpecker on the preserve for more than 6 weeks (though occasionally I heard suspicious loud, spaced tapping sounds), but in the second half of February heard or saw one on three different days. The one close sighting was of a male.
The pileated’s tongue-spear in action.
American coots and large numbers of mallards were a continuing presence on the stream. For much of the month the Canada geese roosting at Blackwell frequently passed over St. James Farm in large numbers, occasionally stopping to graze the lawns and meadow areas. Geese began to break off into pairs as ponds opened up during the last third of February. Interesting bird sightings included a bald eagle flying over, and a hermit thrush on February 16. Migrating sandhill crane flocks began to pass over beginning on the 21st. A small group of white-throated sparrows in the eastern part of the main forest were the first observed on the preserve this year. The first red-winged blackbirds arrived, and eastern bluebirds became a more consistent presence in the last part of February.
This male eastern bluebird seemed to be staking a claim in a corner of the grounds adjacent to a pair of bluebird houses.
Fox squirrels fed heavily from Norway spruce cones in the south forest, and on tree buds elsewhere. Skunk and deer activity was much as described for January. The preserve’s deer minimally are a group of 3 does, a group of 2 deer which occasionally associate with those does, and a single buck. The snow was never deep enough to discourage raccoons. A mink used a den off the south edge of the pond in the preserve’s northwest corner.
Along the way during the owl nest search I found this curiosity.
The deer pelvic bone was well gnawed by rodents.
The bone has been on this buckthorn twig long enough for the twig to grow several long branches.
The large area of restoration brush clearing in the main forest was expanded greatly by District staff, generally following the route of the new trail mapped in the preserve’s master plan. Among the more interesting plants encountered during the owl nest search were two of the most massive black walnuts I have ever seen, and a prickly-stemmed greenbrier (Smilax tamnoides).
February 18, 2016 at 7:38 am (birds, mammals)
Tags: American coot, fox squirrel, great horned owl, hairy woodpecker, mink, Norway spruce, Picea abies, St. James Farm, tracking
by Carl Strang
Winter is relatively slow and quiet in places like St. James Farm Forest Preserve, but plenty still is happening. Today’s sharing will proceed north to south.
American coots have been a constant presence in the stream.
Entrance to a mink den just above the edge of the north pond.
In mid-February I begin the search for the preserve’s great horned owl nest. I wait until then so that the incubation is thoroughly committed and my potential disturbance is minimized. This is the first time I have conducted such a search at St. James Farm. That relatively large, old forest provides a handicap.
So far, with less than a quarter of the preserve covered, I have found more than ten cavities where an incubating owl could not be seen from the ground.
The south forest also hosts wildlife activity.
Fox squirrels have been exploiting the abundant Norway spruce cones in the plantation.
The ground beneath those trees is littered with gleaned cone cores.
The south forest receives its share of attention from bark-foraging birds like this hairy woodpecker.
Each visit to the preserve brings highlights like these.
February 5, 2016 at 8:24 am (birds, mammals, restoration)
Tags: black-capped chickadee, Canada goose, coyote, eastern chipmunk, mallard, preserve monitoring, St. James Farm, striped skunk, tracking
by Carl Strang
Part of my preserve monitoring practice is to write a monthly summary of observations. Today I am sharing the one from January just past:
Most of January was seasonably cold, with significant warming the last few days of the month. Little snow fell, on two occasions about an inch at a time.
Fox squirrels enjoyed the occasional sunny days, and feasted on the abundant walnuts.
Fresh snow at the beginning of the year permitted a general assessment of mammal activity in the preserve. Raccoons appear to be more abundant here than at other preserves I have monitored, with the greatest concentration of activity in the northern portion of the main forest. Skunks were surprisingly active through January, coming out even on nights when the temperature dropped into the teens. This is in contrast to other preserves, where overnight temperatures in the 30’s, at least, were required until the start of the mating season in February. A couple chipmunks also emerged from their holes, likewise unusual in mid-winter. At least one mink includes the stream and the northern portion of the main forest in its territory. Cottontails were scattered throughout, though their activity was mainly around the forest edges. A very few opossums, perhaps no more than 4-5, were active on the preserve. Meadow voles, short-tailed shrews and white-footed mice are common, and occasionally I encountered tracks of masked shrews (vole, mouse, and small shrew identifications based on habitat and regional abundance as opposed to prairie vole, deer mouse and least shrew alternative possibilities). Two domestic cats occasionally moved through the northern edge of the forest, possibly connected to the houses off the preserve’s NE corner.
This coyote caught a meadow vole shortly after I took this photo.
Coyotes covered the entire preserve. Early in January I watched a slightly scruffy looking individual with much red and black in its fur catch and consume a vole in the meadow alongside the entrance drive. At the end of January, a coyote with much more of a white color dominance, very alert and fat looking, passed through the western part of the forest. Tracks revealed that two coyotes occasionally hunt together. I did not detect a consistent activity pattern in the deer. At times 4-5 moved together, that group size suggesting does. Elsewhere, single sets with the foot placement of bucks indicated at least one individual of that gender remains on the preserve.
Canada geese in DuPage County are grazers in winter.
Geese maintained a roost at south Blackwell through the month. Most mornings they flew over St. James Farm heading east, but occasionally a few dozens to a few hundred stopped and grazed the preserve’s lawns and meadows.
Part of a large goose flock feeding on a SJF lawn.
Over a hundred mallards utilized the newly reconfigured stream bed in the last half of January. One of them attempted to choke down a leopard frog that apparently had been unable to tunnel deep enough into the rocky stream edge when the weather turned cold in December. On another day a coot joined the ducks in the stream. The only pileated woodpecker observation during the month was one calling in the western forest on January 4.
White-breasted nuthatches are common in this preserve’s forests.
Cardinals and chickadees began to sing, and downy woodpeckers to drum, in the last half of the month. There are at least 7 chickadee groups of various sizes scattered over the preserve. 1-2 adult red-tailed hawks frequently hunted the preserve’s meadows.
A red-tailed hawk scans a meadow for vole movements.
St. James Farm received a gratifying amount of restoration attention in January, with seeds scattered over the meadow or prairie area north of the stream, and the clearing of buckthorn and other undesirable woody plants from an extensive portion of the western forest.
January 6, 2016 at 7:26 am (mammals)
Tags: cottontail, mink, St. James Farm, striped skunk, tracking
by Carl Strang
Snow that fell around the turn of the year has provided good tracking opportunities at St. James Farm Forest Preserve. As I walk the new survey routes I established in December, I am beginning to assemble a sense of the general mammal presence and activities on the preserve. For instance, I found that cottontail rabbits are much more abundant and widely distributed than my earlier first impression indicated. The species list also is growing. For example, I ran across some mink tracks on New Year’s Day.
At first I was excited, because they seemed smaller and less round than mink tracks usually are, but they proved to be those of a mink rather than the locally rarer long-tailed weasel.
With minimal wandering the mink, possibly a female by the small size, came straight out of the forest and into the newly reconfigured stream.
A new species record is welcome, but even more welcome was a bit of a mystery that came the next day.
Skunk tracks in the snow!
This was surprising because, in my previous experience, skunks didn’t emerge from their dens in early January unless the temperature overnight was at least 30-40F. It had been in the mid-teens. As I followed my route I was able to trace the skunk’s course, roughly a straight line to the preserve’s boundary against a residential neighborhood. Later I backtracked this individual to a contorted tangle of footprints in a difficult to negotiate (for me) spot in the woods just north of Butterfield Road. I wasn’t able to cut this skunk’s entry into that area, so perhaps its den is there.
That wasn’t the end of it, though, as I soon crossed a second skunk’s trail. This was a different individual, larger and with a significantly wider straddle. Its feet were dragging significantly. Sorry, it didn’t occur to me at the time to photograph those tracks. I encountered them near where skunk #2 was exiting the preserve, again into the neighborhood to the east. As I continued my walk I was able to backtrack this second animal, occasionally cutting his trail and occasionally following it.
Here is the habitat map of northern St. James Farm. M shows where the mink was, S1 is the narrow-straddle skunk, and S2 is the wider-straddle individual. Solid lines show where I followed the tracks, dashed lines indicate areas between places where I cut the animals’ trails.
Ultimately I traced a good mile that skunk #2 had hiked. No wonder its feet were dragging at the end, and the foot drag gradually vanished as I backtracked it. It had crossed the parking lot after visits to the ranger residence and the round office building. Before that it had crossed the trail of skunk #1 (close enough in time that my skills are inadequate to say which individual passed that way first) after taking the Prairie Path tunnel under Butterfield Road. It had emerged from the woods south of Butterfield, still on the preserve, but a locked gate blocked my further progress.
This is the kind of traveling I expect in February, when the striped skunk mating season arrives. Then, they are much more likely to come out on the colder nights. As this winter progresses I look forward to learning whether St. James Farm’s skunks in the winter of 2015-16 habitually emerge to wander more often and in colder weather than skunks in other years in other places.
January 1, 2016 at 7:15 am (birds, botany, mammals)
Tags: Blackwell, Fullersburg, gray squirrel, Hidden Lake, merlin, West Branch, whitetail deer
by Carl Strang
Time to shake out some miscellaneous photos from 2015 that didn’t make other posts.
I liked this October scene of sumacs contrasting with pines.
This buck checked me out as I explored a remote area of Hidden Lake Forest Preserve at the end of October.
The classic pose of a gray squirrel gnawing into a walnut at Fullersburg Woods in November.
The highlight of my group’s Christmas Bird Count was a merlin at West Branch Forest Preserve.
I hope your 2015 was a great one, and that 2016 will be as well.
December 16, 2015 at 7:28 am (ecology, geology, mammals, paleontology)
Tags: coyote, crinoid, forest, fossil, moss, Quercus rubra, red oak, St. James Farm
by Carl Strang
Now that the leaves are down from the trees and shrubs, I have been exploring the areas between the forest trails at St. James Farm Forest Preserve. Those areas are large enough that I cannot cover the forest adequately from the trails. I have found deer runs and old equestrian paths that will provide sufficient access for routine monitoring. Along the way I have found some interesting places. One foggy day I zig-zagged my way through part of the western forest.
This area has been cleared of invasive honeysuckles and other shrubs. Part of it is young second growth with a few clearings where perennial herbaceous plants are growing.
Elsewhere there are old trees, many of them red oaks.
Among the occasional boulders was this outwash-rounded fossiliferous one.
The chunk of local Silurian dolomite appears to have been a spot on the ocean floor, adjacent to a reef, where there was a crinoid colony.
A morainal depression held a huge fallen red oak.
The tree had lost the grip of most of its roots in the soil.
The last roots that were holding the tree up still show the relatively fresh color where they fractured.
The orientation of the trunk relative to those broken roots suggests that a very strong wind from the west was the culprit.
The oak didn’t go down alone. Broken stems reveal the trees it took out on either side. The force of the fall split the oak’s stem lengthwise.
Each day in this exploration has brought its own delights.
Here, a beautiful moss colony became established on an old burn scar.
One day when I was the preserve’s only human visitor, I saw one of St. James Farm’s coyotes. The fat belly and good coat indicate that this animal is a successful hunter.
So now the stage is set for routine coverage of St. James Farm’s ongoing natural history story.
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