Articles

Goin’ on a Safari. A Backyard Safari…

Not a good day birding. I went out this morning in the gray and the gloom, knowing the light wasn’t very good for bird photography, but I thought I’d try anyway.  Not only didn’t I get any photos, the birding itself was rather slow. Upon arriving back home I thought I’d change focus.  I hadn’t gotten my macro lens out in a while, so decided to go on a “backyard safari”, looking for little critters that inhabit the yard.

The nice thing about a backyard safari is that they never disappoint!  Well, in SUMMER they never disappoint, because you always find plenty of insects and other small critters in the yard. There were a couple of highlights today.  First were the White-lined Sphinx Moths that were gorging on nectar from a big honeysuckle.  Not a rare species, but given their size, you always do a double-take when you first see them.  They were moving pretty quickly from flower to flower, making photography a challenge, but with time (and a lot of deleted photos), I managed a few decent photos.

The second highlight were a couple of surprises on the butterfly weed I had planted. I wasn’t ever clear if the variety I bought was truly a form of milkweed.  Sure, butterflies loved the blooms, but would Monarch Butterflies treat it as they do all the wild, Common Milkweed that’s around here? Would they lay eggs?  That was answered today, when I found two caterpillars, one quite large, and one small. I don’t have a really large area of butterfly weed, but seeing those Monarch caterpillars today makes me want to plant some more.

A nice time, just a stone’s throw (quite literally!) from the house.  Backyard safari saves the day…

White-lined Sphinx Moth - Hyles lineata

White-lined Sphinx Moth (Hyles lineata), feeding on nectar from our massive honeysuckle in the back yard. There were 2 or 3 hanging around the backyard, with the honeysuckle drawing the most interest by far.

Monarch Butterfly (Danaus plexippus) - Caterpillar

(Monarch Butterfly (Danaus plexippus) caterpillar, hanging around on my “butterfly weed”. According to this guy…yes…yes indeed…this IS a form of milkweed.

Leafcutter Bee (Megachile)

A Leafcutter Bee, hanging out on the same Butterfly Weed plant as the two Monarch caterpillars.

White-lined Sphinx Moth

Another White-lined Sphinx Moth at the honeysuckle.

The Monarch Butterfly vs. South Dakota Politics

Monarch Caterpillar - Danaus plexippus

A Monarch Caterpillar having lunch. This was taken in a roadside ditch in Minnehaha County, South Dakota, but it’s not nearly as common a sight as it could (should) be. Ditches here are mowed, sprayed, and otherwise managed, resulting in ditches (even on rarely used gravel roads) often looking like golf courses or urban lawns.

Yesterday I birded several locations to the northwest of Sioux Falls. I traveled through not only Minnehaha County (where Sioux Falls is), but also nearby McCook, Lake, Kingsbury, and Brookings counties. When I go birding around here, I typically travel on gravel roads, to minimize interaction with other cars and reach places where I can actually stop and watch for a while. While traveling gravel roads through these counties yesterday, I was struck by the incredibly variable management of roadside ditches.

What’s that? You don’t pay much attention to the ditches when you’re driving? I can’t say I normally do either, but I was recently at the North American Congress for Conservation Biology Conference (NACCB), where there were a number of presentations on the plight of the Monarch Butterfly. They’re a species dependent upon milkweed. One of the problems is that SO much of the United States landscape is now being used for agriculture, urban development, energy development, and other uses, and milkweed is crowded out.  Even in areas adjacent or near to agricultural land, herbicides are often used for weed control, further reducing milkweed abundance.

This spring, I was contacted by researchers who were studying landscape change, and how it potentially impacted Monarch Butterflies. Specifically, they were interested in using our landscape modeling to look at future landscapes, and the resultant impacts on both milkweed and Monarch butterflies. In the model they used, they were assuming that roadside ditches in most areas were places where milkweed was likely to be found.

As I quickly learned on my drive yesterday, that characterization is clearly NOT true in many areas, and seems to be strongly driven by local politics, in terms of local land management.  When driving in Minnehaha County, I often come across sprayer trucks, actively spraying herbicide in all the ditches to keep herbaceous weeds in check.  I also often come across tractors with mowers attached, mowing the ditches close to the ground.  Yes…even for the GRAVEL roads that rarely get traffic, the ditches are treated in this manner.  The result? The ditches around here often look like a well-manicured lawn (see photos below).  Hell, they often look BETTER than my yard does!! They often consists of nearly 100% brome grass (an exotic, BTW), while milkweed stems are few and far between, and are typically relegated to small spaces where a sprayer didn’t reach.

When driving through parts of Kingsbury and Brookings counties, I was struck by the incredible difference in the ditches. Many ditches clearly hadn’t been mowed in some time, if they were ever mowed. Grasses were mixed with wildflowers, other herbaceous plants, and yes…MILKWEED (see more photos below).  Milkweed was often present in very high abundance.  The issue clearly isn’t adjacency with actively growing agricultural crops. As the photos below show, the Brookings and Kingsbury County ditches often had an abundance of herbaceous plantlife in areas directly next to corn and soybean fields.

It is possible that I just happened to drive on some gravel roads yesterday in Kingsbury and Brookings counties where no action was taken, but spraying was occurring elsewhere.  On the Brookings County website, for example, I was disappointed to find this page, that notes the county DOES spray right-of-ways with “products such as 2,4-D, Tordon 22K, and possibly mixtures of them“.  They do note on their web page that they spray in May, so clearly they don’t spray all ditches, as the photo below (with the milkweed) is on a gravel road on the very western edge of Brookings County.

During the NACCB conference, one talk I heard focused on recovery efforts for the Monarch, and plans in place to improve Milkweed abundance and improvement. Even a dead-red, conservative state like Oklahoma is taking action, with the Oklahoma highway department specifically managing ditches for Monarch and pollinator habitat. They are specifically planting wildflowers and milkweed along highways in an effort to help not only Mmnarchs, but other species that depend on these plants. The discussion at the conference was a similar “Monarch Highway” stretching from Texas up northward through southern Canada, an area with highway ditches specifically devoted to herbaceous plants, including Milkweed.

Could such a thing happen up here in South Dakota? I’ll see it when I believe it. We have such an focus on agricultural production, that I find it hard to believe they’d accept any land management action that could possibly harm that production in any way.  Not that I BELIEVE an aggressive, pro-Milkweed, pro-Monarch Butterfly agenda would harm agricultural production, but in this VERY red state, environmentalists are usually portrayed as the enemy.  For a large portion of the populous here, I have no doubt they’d view a program like Oklahoma’s as an attempt by environmentalists to meddle in local affairs.

It’s hard to imagine now, but when we moved to South Dakota 25 years ago, our Congressional delegation was completely Democratic. Hell, we had Tom Daschle as a Democratic Senate Majority Leader.  How times have changed. Serendipity may have led to the 3 Democratic Congressional delegates 25 years ago, but in today’s anti-environmentalist concerns for issues like the Monarch Butterfly as far removed from most South Dakotan’s minds.

Minnehaha County Roadside Ditch

I wish my yard looked this green, lush, and free of weeds. Driving home yesterday through northern Minnehaha County, THIS is what roadsides looked like. Even for lightly traveled gravel roads such as this one. Frequent spraying and mowing ensure a monoculture of brome grass, with nary a milkweed stem in sight.

Brookings County Roadside Ditch

In contrast to the Minnehaha County ditch, this is what I saw in many parts of Kingsbury and Brookings Counties. This ditch clearly hadn’t been mowed or sprayed this summer, and was full of herbaceous plants other than brome grass, including many milkweed stems.

 

 

 

%d bloggers like this: