bee habitat

A secret reservoir of bees in the forest

Because I live adjacent to a 91,650-acre state forest, I’m always interested in bees that might dwell in the woods. On hikes through the trees, I seldom see any bees except for an occasional bumble-sounding bee that circles me as I walk. Around it goes, getting louder and then receding, over and over. Its behavior is so predictable, I could swear it’s the same individual every year.

The Capitol State Forest is managed for timber production, and the money made from sales goes primarily to education within the state. Like many managed forestlands, the area is divided into segments. Each year, some segments are logged while the rest are allowed to grow. In newly logged areas the slash is piled into great mounds, Douglas-fir seedlings are planted, and other growth is sprayed with herbicide until the seedlings are large enough to compete on their own.

In 25 years, I’ve seen a number of sections harvested and replanted. Regrowth seems slow in the beginning, but once the seedlings get started, they shoot up like moon rockets. In this rainy climate, conifers do indeed grow like weeds.

So how does all this forest disturbance affect bees? After listening to a number of presentations at the PNW Pollinator Summit last week, I learned that woodland bee populations generally behave exactly as I have observed, and the cycle is completely predictable.

No sun, no bees

Not many bees live in dense coniferous forest for two reasons. First, conifer trees do not produce flowers themselves and, second, the forest floor is too dark to support flowering plants. In my area, a thick canopy of trees passes enough light to grow of variety of ferns, mosses, lichens, and mushrooms on the forest floor, but not many bee-attractive plants.

However, as soon as a section is logged, the light comes flooding in. Seeds that have remained dormant for years suddenly have a reason to live, and the logged area bursts into flower with forbs, shrubs, and small flowering trees. Bees quickly arrive from neighboring areas, and you can find them the very first year after a cut.

Soon after logging operations end, I find aggregations of sweat bees in the ground, longhorn bees plying the thistles, and honey bees in the fireweed. I find bumble bees in the salal and Oregon grape, while leafcutters and tiny Ceratina work some of the smaller blooms. Butterflies arrive, too, as well as an assortment of moths, beetles, and pollinating hover flies.

Early seral communities

The first stage of forest regrowth is called the early seral stage. Early seral is simply the very first plant community that establishes itself after a disturbance. The disturbance could be caused by forest fire, volcano, flood, wind, ice, or—in this case—logging. The landscape of an early seral stage is characterized by herbaceous plants including weeds, broadleaf shrubs, and various grasses. And along with these plants comes a host of animal life, including bees, birds, butterflies, and plant-consuming animals.

Unfortunately, the widespread use of herbicides to kill these plants delays the sunshine feast. Forest managers are expected to grow trees—not wildlife—so they battle the competition with spray. But without forage, there can be no brood rearing. Basically, re-establishment of animal populations is restricted until the trees reach a certain maturity that the foresters call “free to grow.” Basically, a free-to-grow stand of trees is one that is large enough and healthy enough to grow on its own and outcompete other plants.

Once the replanted stand is mature enough to outcompete other woodland plants, the herbicide treatments stop, and the plants that characterize first seral growth are allowed to proliferate. Once this happens, the bees, birds and other animals return and populate the area.

Trees get a head start

As you can imagine, allowing the planted seedlings to have a head start shortens the length of time before a shaded canopy returns. As soon as a canopy begins to form, the shade-intolerant species die off. Then, in a few more years, you are back to dense shade, conifer trees, mosses, and ferns.

Early seral growth is extremely important to animal populations. Some biologists refer to these areas as animal reservoirs, a place where bees, birds, and other species can flourish. Even managed honey bees find them extremely attractive. With any luck, many of the species will move on to the next logged location as the shade sets in, and in this way, perpetuate their populations.

Time for change

Due to better understanding of the role of pollinators in a healthy planet, some forest managers are investigating ways to extend the early seral stage of regrowth to accommodate the insects while still turning a profit from trees. Others are trying to figure out how and why certain forestry laws interfere with pollinator recovery.

For example, is it best to pile the slash (twigs, branches, root balls, etc.) or leave it strewn across the landscape? Should native plants be seeded in the recovering areas, or should it be left alone? Should the soil be turned? Must herbicides be used on invasive plants?

What is best for forest bees?

At this point, the answers to many of these questions are not clear. We do know that ground-nesting native bees love bare soil. After logging operations, nests are found on skid roads and in places where slash has been removed. Equally attractive are places were the slash has been piled and then burned, leaving mineral-rich deposits.

On the other hand, cavity nesting bees often reside in the slash itself, especially in wood containing beetle holes. In addition, slash piles are famous for providing cover for all kinds of wildlife that is suddenly left without a protective forest. The piles become homes for mammals, reptiles, birds, and other invertebrates including beneficial insects.

And while invasive plants are generally considered bad, some need careful evaluation. Some bees, such as the tiny masked bees, Hylaeus, prefer invasive Himalayan blackberry vines for nest building, and dozens of other species use it as a bountiful source of pollen and nectar. Once the forest canopy closes, the blackberry will disappear, so how much management—and how much herbicide—does it really require?

New bee frontiers

For me, it is exciting to see so many different groups of people becoming interested in bee conservation. Until I attended the PNW Pollinator Summit, I never really thought about bees in the forest. Although I often hunted through newly logged areas looking for bees to photograph, I never really thought of those areas as a conservation resource. Now I’m thinking, dah! Of course it’s a resource—and one that deserves a closer look.

Honey Bee Suite

Bees in the forest: Ground-nesting bees like this <em>Andrena</em> need bare soil for nest building.

Ground-nesting bees like this Andrena need bare soil for nest building. © Rusty Burlew.


  • Excellent post, thank you. It would be great if there could be a more integrated approach as usually these situations are due to a lack of knowledge and understanding, and some minor adjustments can make a big difference.

  • This is a perfect habitat for ‘the other pollinators’. Always good to recognize your place (in life and in a landscape) and also those places where you need not dwell long. Some years ago I kept honeybees in small numbers, basically to pollinate small truck crop operation in a predominately souther pine forest environment. I decided beyond the small plots for growing garden vegetable the landscape was about a like desert for a honeybee. You could maintain small number with a bit of feeding but not enough to really get to any kind of economical viable scale.

    Gene in Central Texas…

  • Thanks for another insightful article. Happy to hear the industry is looking at the bigger picture. I walk in our nearby CA coastal state forests almost daily, and some bees and butterflies are there in spring and summer. However, it seems remarkable how “quiet” these rich and diverse ecosystems remain. Someone recently explained why there are few birds and it’s the same reason there aren’t many pollinators – a lack of food. Bombus melanopygus (and another bumble I can’t identify) are often busy on the Labrador tea and manzanitas if they are in the sunshine or partial shade. I, too, get the circling bees around me in the beginning of the season. These are usually in more shaded forest areas, although not dark ones. Perhaps they are hornets that build the big tree nest colonies I’ve seen. None have slowed down long enough to let me figure out who they are. Obviously, they’re in territorial mode, although none have been aggressive. I’ll now focus on more species, since we share many of the same. When the sun returns and the weather warms.

    • Katy,

      This year I’m taking my butterfly net along with me. I just need to catch one long enough to get a good look. For some reason, I’ve always thought they’re bumbles, but now you’ve put doubt in my mind. We should compare notes.

  • New to you and bees. Thankful for info and hunger for more. On wild bees and their role as pollinators. Was under impression that Einstien said our civilization would starve if lost honey bee. Thank you for all your knowledge. Bet it didn’t come easy.

    • Mike,

      I’ve heard many times that Einstein didn’t say that, but in any case, it’s not true. Without honey bees, our modern form of agriculture would certainly need to be changed, but life would go on.

  • Hi Rusty,

    Interesting post. Neighboring landowners select cut about 50 acres of their 300-acre poplar/elm/oak forest over the last year. It will be interesting to watch the return of blackberry and other shrubs and plants over the next couple of years. I expect that the deer/bear and my honey bees will be overjoyed. I do mourn the loss of the Tulip Poplar which I consider to be one of the most handsome trees of the Middle Atlantic states, but we have plenty of our own.

    • Bill,

      I have mixed emotions about losing or cutting trees. I adore trees and cringe to see them come down. At the same time, the sun is a welcome sight and the small plants love it. I try to be philosophical about the process.

  • I have five colonies and 130 acres of thick forest. I have considered thinning the trees to improve the timber, but it did not occur to me that the loggers might actually help my honey bees. That’s the tie-breaker. Thank you for this post.

  • Rusty,

    (I know this post is old but in case your monitoring it):

    How deep into Capitol Forest do you find honey bees? I’ve wanted to map out the park and draw an area in the center that is unlikely to have bees from surround beekeepers (like yourself) foraging there, and then try to find honey bees. I have wondered if there are feral colonies in that forest and other forests close to us.

    • Jason,

      I’ve mostly seen them at the edges, but that is where I walk all the time, so it doesn’t mean much. Equestrians that use the forest sometimes mention seeing them, and they go in deeper than I do. I’m sure you could find feral colonies in there, especially near the drainages where more light gets in and along the logging roads. Look for flowering trees and weeds.

  • Hello, I am not sure if this post is still being monitored or not but we (my family and I) forage every year for chanterelles in Capitol Forest. Two weeks ago we headed up and into our usual spot (pin drop location) and while hiking in we walked into a colony of honey bees, my 8-year-old was stung 19 times, of course, we hurried out. We went back today (10/08/2022) after the first rain and again, we headed in but this time we walked in from a different location, my daughter had dropped her sack the last trip in after the bees had attacked her so we saw her bag laying on the ground where she left it. My husband walked in and retrieved the sack while I stayed waaaay behind with my 2 boys and the bees just started stinging my legs over and over, I only ended up with 7 stings, and one of my boys was stung 1 time. We vowed to completely avoid that part of Capitol Forest as it is 100% protected by bees. If you need more details feel free to email me.
    I’ve been looking everywhere to see if anyone had encountered this while foraging Capitol Forest but I found nothing.

    • Leanna,

      Very interesting. Because my home borders the Capitol Forest, I have hiked in there nearly every day for the past 28 years. I’ve never seen honey bees anywhere in there, except at the very edges where the treeline meets fields or meadows. In addition, the behavior you describe doesn’t sound like honey bees. At this time of year especially, it is almost unheard of for honey bees to “attack” anyone who is not trying to enter their hive. Also, when honey bees feel threatened, they are likely to go for your hair, face, and hands. That they stung your legs is odd.

      Thirdly, honey bees don’t live in the same environment where chanterelles grow. Those mushrooms are usually in fairly damp, dark woodlands with a certain amount of dappled sunlight. Honey bees wouldn’t live or forage in a place like that. You say you walked into a colony of honey bees, but did you actually see it? Or are you assuming that it was honey bees?

      I’m pretty certain from your description that you ran into some type of social wasp, perhaps yellowjackets. They would be in great numbers this time of year, they may well go for your legs (especially the types that live in the ground), and they are often found in deeper, darker woodlands. This is because they hunt meat rather than nectar.

      The last question I would ask is did you have to remove the stingers from your skin? If no stingers were left behind, almost for sure it was wasps.

      • Oh my! I am so unsure HOW I missed your reply. I will skip right to it and say yes, I pulled multiple stingers from my 8 yo’s neck and back, they somehow got underneath her shirt. My son was stung once on his back also which left a stinger also. This is the only reason I believe they were honey bees; they were also very soft looking.

        Again, I am assuming it was a colony. I have no facts to support this other than the 2 times we went and were attacked by bees. It was scary.

        • Leanna,

          The fact the bees left stingers totally changes my opinion. Other than honey bees, I don’t know of any insects in this part of the world that would leave stingers behind. I wonder what was going on. I suppose it could have been a colony in or near the ground. That doesn’t happen very often, but it could. Last fall was particularly dry, so maybe the lack of food made the colony skittish. It’s a sad story because I hate to see young kids grow up afraid of bees.

          • Thank you for your reply, friend. It was definitely a very scary and traumatic experience and my 8 yo daughter went from loving the forest to being so terrified, she will no longer forage with us and I’m not sure she ever will. Makes me so sad. It absolutely was the driest I’ve ever seen the forest, and I do believe it had everything to do with this experience.

            I just can’t wrap my brain around it still to this day, just standing there while bees appeared all over her and then myself the following trip. They never swarmed, and I never heard a single bee buzz. We were plowing through the forest, just walking around looking for mushrooms. IDK, I wish I had answers. I wondered if possibly they were nested underground or in a rotted-out stump. Either way, I have never ever heard of this happening to anyone so it still bothers me because so many people frequent Capitol Forest year around, so I assumed maybe someone else encountered this… but nope. Sigh. I will always wonder I guess.

            • Leanna,

              About five years ago I was hiking in Capitol Forest when I encountered several equestrians who said their horses had been spooked by a cloud of bees, and one horse had taken off at a gallop, which totally caught the rider off-guard. They warned us about the bees, telling us to be careful. Being a bee nerd, I went in the direction they said not to go, but I never found anything, so I don’t know if they were bees or wasps. It was spring, so bees were more likely than wasps. Wasps are more likely in the fall, although, in super dry fall weather, it could be either.

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