
Camera settings: f/8, 1/40 sec., ISO-320, Canon 90 mm macro tilt shift ~ 1.5° tilt
"What a thousand acres of Silphiums looked like when they tickled the bellies of the buffalo is a question never again to be answered, and perhaps not even asked." -Aldo Leopold
I’ve been fortunate enough to find time to get out this spring and add some spring ephemeral wildflowers to my photographic list. Englemann Woods NA near Wildwood, MO has been a great place for this along with other nature observations. Today’s photo is Trillium flexipes. It is one of the white trillium that can be somewhat confusing to identify properly. I found a number of associated common names, but ‘nodding trillium’ seems to be the most commonly used.


I’ve posted images of the cascades on Black Mountain before. After some good rains, Casey and I visited this past March with hopes of making it to the top. This is not an easy hike, but Casey had not yet seen most of the cascades. This was our intention, but it was quickly realized that the overcast afternoon we were promised was not going to be. So, we utilized the few clouds remaining to the best of our ability and climbed high enough to find some falls hidden behind canyon walls that blocked the harsh afternoon sun.




This post is a modified article that was originally published in the Webster Groves Nature Study Society’s journal, Nature Notes (February, 2020, Vol. 92, No. 2).
The alarm on the phone sounds off at 4:00 am. You have a quick, light breakfast but no coffee. Making moves required during the act of recycling that coffee would be detrimental to your goals this morning. You’ve packed the car the night before, so you simply need to wash your face and throw on the required number of layers it will take to stay warm enough during your several hours sit. This requires some critical thought as morning temperatures during the rut can often be in the teens or twenties.
You arrive at the site by 5:30 am and are under cover at your pre-scouted location by 6:15 am — first light. Sunrise and the golden-hour will come in about 30 minutes. You picked this location due to heavy deer traffic signified by sign such as tracks and scat, scrapes and rubs. You put your back to the rising sun to take advantage of the beautiful golden-hour light that will be splashed across the scene. You also considered the potential background for your photos. You made sure there is plenty of space between your subjects and a natural, potentially autumn-colored background to get that creamy, out of focus quality that helps your magnificent subject stand out. Remember, the key to improving your nature photography is to make the photo, not simply take the photo. Previsualization and planning are often critical!
Arriving prior to first light brings the best potential for being unnoticed in your blind. However, deer are often just as active at night and sometimes you may find your spot is already occupied by your subjects! Don’t worry too much; you may spook those deer out of the area, but there are plenty of others who will likely visit these hangouts before the morning is over. Where you choose to photograph will be important in this respect. Take advantage of photographing in areas that are closed to hunting, like parks and sanctuaries. Here the deer are very accustomed to people and our scents, showing little fear. Often, during the rut, younger bucks may be curious and will move closer to you. You will typically need to work harder to get closer to the wearier does and old, veteran bucks who have been around the block a few times. In non-hunting areas, you can often get close enough to your subjects to make meaningful photographs by simply having an early-morning walk around with a longer telephoto lens (e.g. 300-600 mm focal length).
Like clockwork, at 6:30 am every morning, large flocks of blackbirds move overhead from the west, chasing the rising sun in search of feeding grounds. Photographing the rut is very similar to hunting. Deer hunters in our area typically use tree stands. This higher elevation provides advantages in being able to see greater distances, being out of direct eye-line of the deer and aids in dispersing your scent, which is frequently a give away of the pursuer. When hunting with a camera and lens, you need to stay on level ground and shoot the deer at eye level or lower.
A method Miguel Acosta and I like to use is hiding in a blind (we like the portability of ‘throw-blinds’) along well-established deer trail or nearby communal rub or scrape areas. This will require using camouflage, blinds or similar methods to break up the human form. In the types of areas described above, you need not worry too much about your scent. Deer have very strong sense of smell and in the middle of an unpopulated forest, your odors can very easily give you away. But, in areas like parks where people and deer are often found in close proximity, your own scent is less likely to alarm the deer and thereby allow you to get much closer.
Around mid-morning a Red-shouldered Hawk, perched above our location, vocalizes and a mixed-species flock of songbirds moves into our copse of trees. Since we have our large lenses, we try our hands at photographing Chickadees and Titmouse. Although scent and wind direction may not play an important role in this setting, being quiet is important for getting those close and intimate shots. I recommend doing everything you can to keep your noise to a minimum. Try and chose gear without Velcro or other noisy fasteners. Keep your voices to a minimum and try not to move frequently. If available on your camera, choose the “silent shutter” setting. Many dSLR cameras have this setting that lowers the volume of the mirror flapping. Consequently, this will lower the frame rate of the camera, but this is preferable to spooking your subjects before you get your shots. New mirrorless cameras lack the mirror box of their older brethren and can shoot very quietly at high frame rates.
Later in the morning I awake from a nap to the sound of Wild Turkeys vocalizing. I quickly realize that a small flock have wandered near our location and Miguel is offering them some verbal enticement to come a little closer to our shooting lane. It didn’t work, but the fact they were within ten yards of our location offers further proof that our blinds and technique work to get us closer to wild animals. Until recently, I had never given our North American game species much thought as a subject of natural history study. I’m sure that not growing up as a hunter or outdoorsman has had an influence on this. Over the past couple of years, I have fallen hook, line and sinker into learning everything I can about white-tailed deer and finding ways to best capture them with the camera. Miguel and I have much to learn and we are eager in making more photographs, capturing their different behaviors and at different times of the year.
For recommended reading about the rut and other aspects of the lives of white-tailed deer, I recommend reading any books you can find by authors Leonard Lee Rue III and Mark Raycroft.










Photographed with my friends Miguel and David at Sax Zim Bog on December 31, 2019.
This post is a modified article that was originally published in the Webster Groves Nature Study Society’s journal, Nature Notes (January, 2020, Vol. 92, No. 1).
Finding the orchid, Triphora trianthophora (three-bird orchid, nodding pogonia), during open bloom can be somewhat of a chore, particularly among us weekend warriors. Casey Galvin and I were both intrigued about the possibility of getting photographs of this diminutive and gorgeous orchid since learning of their discovery at Babler State Park by the WGNSS Botany Group led by Nels Holmberg, John Oliver and others in 2018. The following descriptions and photographs are anecdotal and were not collected using rigorous scientific methodology.
Phenology
There are several reasons it is challenging to find this extremely ephemeral plant in bloom. First, being partially saprophytic, the plants exhibit periodic dormancy and may not send up above-ground shoots every year, persisting instead as subterranean tubers for extended periods (Homoya, 1992). Even when they do produce stems and leaves, there is no guarantee the plants will flower in a given year. Additionally, when they do flower, any one bloom is open for only a few hours during a single day.
Exhibiting a phenomenon known as thermoperiodicity, a group or population of these plants are synchronized to open mature buds on the same day. This first wave of synchronous blooming is reportedly induced by a drop in minimum daily temperature of at least three degrees over two or more consecutive days. Following another 48-hour period, all mature buds within the population will then open on the same day (Luer 1975). Being skeptically minded, this was something I wanted to observe for myself.
Beginning in late July, Casey and I began monitoring the easier to get to population at Babler State Park. The first wave of synchronous flowering occurred on August 3rd. We unfortunately missed this but know the exact date because of visits on days immediately before and after this date. Looking into historical temperatures collected from the closest publicly-available weather station (Babler Park Estates – KMOBALLW37) revealed the initial blooming date fit the required temperature pattern perfectly (see attached figure). I continued monitoring and collecting flowering data and observed two more large flushes of synchronized blooms along with three days interspersed where only 3–10 stems/plants opened flowers. For subsequent synchronized days, I did not observe a coinciding drop in temperature as described above. I assume that the trigger for the initial bloom works to synchronize the population and subsequent larger bloom days are consequently synchronized due to all plants ‘running ahead’ at the same rate. However, there could potentially be some other unknown environmental triggers that are playing a hand here.




Pollination
Halictid bees have been reported to be the primary pollinator for this species (Luer 1975). I had this in mind as I observed and began taking photographs while visiting on a large bloom day but doubted I would be fortunate enough to observe or photograph a potential pollinator visit. However, patience allowed me to do just that. I first observed visits by small flies and Bombus impatiens. Although Williams (1994) reported that Bombus have acted as pollinators of this species, I did not observe any of these visitors with attached pollinia during the 10-15 flowers I watched them visit. Eventually, I observed three different Halictid bees as they visited multiple flowers and observed these were heavily attached with pollinia. As described by Williams (1994), seed capsule production (successful pollination) is a relatively rare event in this species. Nevertheless, this was a treat to observe and photograph.






REFERENCES
Homoya, M.A. Orchids of Indiana. Indiana University Press, Indianapolis, Indiana, USA.
Luer, C.A. 1975. The Native Orchids of the United States and Canada. New York Botanical Garden, Bronx, New York, USA.
Williams, S.A. 1994. Observations on reproduction in Triphora trianthophora. Rhodora 96:30-43.

Many thanks to Casey Galvin who turned me on to the closest places to find and photograph a plant species that had been a target of mine for some time now. Eastern skunk cabbage (Symplocarpus foetidus) is a fascinating plant that is typically found in eastern North America and the upper midwest. The nearest populations to St. Louis that I am aware of are near Peoria, Illinois, which is about a three hour drive from my front door.
These are one of several early blooming plants that start the spring botanical season. These members of the Araceae family, known as the aroids, bloom from February through April. Like several plants in this family, this species produces odors reminiscent of rotting meet in order to attract pollinators that are predominantly dipterans (flies), hymenopterans (bees) and other, more terrestrial arthropods. I did not find the odor too overpowering and I also thought I picked up a slightly sweet, syrupy smell.

Another remarkable aspect to this species pollination biology is that the spadex and surrounding tissues are thermogenic – meaning they produce their own heat. This thermogenesis, produced via enzymatic reactions not too dissimilar to the reactions that occur in mammals, may serve to assist the inflorescence and leaves of the plant to break through frozen grounds. It also likely serves as to further the ploy that the plant is a rotting carcass, hopefully attracting flies and other insects interested in such things.

Other than a few very small flies and a couple of small native bees, the only pollinator I found during my visit was the honey bee. These were quite abundant.

To show the moisture associated with the seep habitat I was in, here is a skunk cabbage spathe surrounded by snakeskin liverwort (Conocephalum salebrosum).
That’s all I have for now. Most of the information in this post and much more can be found in the following source:
Thorington, Katherine K. Pollination and Fruiting Success in the Eastern Skunk Cabbage. The Journal of Biospheric Science, vol. 1 no. 1, April 1999 http://www.mtholyoke.edu/courses/mmcmenam/journal.html

Image made with Canon 7d mkii, Canon EF 500mm f/4L IS II USM Lens and Canon Extender EF 2X III
I don’t usually like to discuss gear on this blog, but once in a while I think there are some things new or interesting enough to talk about, particularly when I think they may be critical for producing the best possible results. I have been wanting to test and compare the 2 latest Canon teleconverters (Canon Extender EF 1.4X III, Canon Extender EF 2X III) in a head to head test for sometime and this past weekend found me with an opportunity to do so. To be clear, this was not the optimal situation to make this test. The light was poor and the subject was probably too far away and not covering enough pixels to make a relevant comparison. But, I thought I’d give it a try.
These tests were setup as equally, but not scientifically, as possible. For these first two images, I processed as normal and tried my best to be equal in all capture and processing steps. I cropped to make the bird approximately the same size in both images, so obviously, the photo made with the 1.4X tc was enlarged more than the one made with the 2X tc. I then resized each to make them 1000 pixels on the horizontal. The purpose here was to see if there is a discernible difference in sharpness and image quality between the two. The 2X tc often gets poor reviews, but just as often gets raves by those who claim to know what they’re doing. Many claim that the better results are made by using a 1.4X tc, or native lens and cropping in post to obtain better results than those obtained by using the 2X tc for an optical zoom.

Open the two images above in separate tabs to see a roughly equal comparison. In my opinion, I was pretty pleased with the results of the 2X tc in sub-optimal conditions. Both photos are fine for sharing on the web, although the IQ would limit print size. Like I said, the conditions were poor and the bird at a great distance. However, I think I would give a slight edge to the photo made with the 2X converter. This edge might just as well be due to differences in how I processed or with changing conditions within the few minutes between captured images.
Let’s look next at the “100% crops” of both photos. This simply means that these photos were both cropped at the same dimensions (4″ x 6″) and not resized. These examples were NOT sharpened.


Again, with this comparison, I find the two very close. Either one would work well enough, but if your goal was to maximize print/display size, I would probably go with the 2X tc. I guess this has surprised me a bit. I was expecting that, under these sub-optimal conditions, the 2x tc would fall behind the supposedly sharper combination of the 500mm + 1.4X tc.
What do you think? Did I make any major blunders in my comparison or analysis? Please let me know. I do hope to make this comparison again under perfect light and optimally placed subject sometime in the future.
Thanks for stopping by and reading this far!
-OZB

A few of us headed up to Montrose Harbor on the north side of Chicago yesterday in search of a rare and late shorebird visitor. There has been a Piping Plover that has intermittently been using the beaches here since October. We visited following approximately four straight days that the bird was sighted and the weather forecast was great for this time of year. Unfortunately, the bird was a no-show for us on this day. Since the Lincoln Park Zoo was almost directly across the street, we checked to see if they had a Piping Plover in their collection. This is the female bird in winter plumage pictured above.
The harbor held a decent number of waterfowl that we were able to get close enough for some shots. See below.
-OZB