- Author: Dan Macon
Like many people in the rural areas of the Sierra foothills, my family raises chickens. Our dozen or so laying hens keep us supplied with eggs year-round. And each year, we raise 20-30 Cornish-cross meat chickens, which we butcher ourselves - roast chicken and barbecued chicken are two of our favorite meals!
About 10 days ago, we picked up our first 15 meat birds of the year from a feed store here in Auburn. While we typically expect to lose one or two chicks at this stage, this morning we lost the 13th chick out of the 15 we started with - so we decided to try to learn what's going on. I'd recently read about an avian influenza outbreak in the Midwest and felt that we needed to be responsible chicken owners!
I first called the Sick Bird Hotline at the California Department of Food and Agriculture (CDFA) (866/922-2473) and left a message (they called back within an hour). Then I contacted the California Animal Health and Food Safety (CAHFS) Lab at the UC Davis School of Veterinary Medicine. From there, I was referred to CDFA's Animal Health Branch Redding District office, where I talked to Dr. Michael Poulos. He told me that backyard chicken producers could get up to two birds examined at the CAHFS lab for just $25 - and that we could overnight the specimen to the lab (as a sheep producer, I have driven animals to the lab in Davis for necropsy - it was nice to know I could put the dead chick on ice and overnight it to Davis - especially with gasoline at over $5 per gallon!)
The lab should have my sample by tomorrow morning. Overnight shipping was around $47 - less than the gas I would have burned driving to Davis and back. And I hope to have some answers by the end of the week. I don't suspect avian influenza, but I do hope to learn what's going on! Stay tuned!
In the meantime, here are some great resources for backyard poultry producers:
UCD Veterinary Medicine Backyard Poultry Website
California Animal Heath & Food Safety Lab System
A final note on the CAHFS lab - we send sheep to the lab whenever we experience an unusual death (for example, if more than two sheep die, or if we experience an unusual level of abortion or newborn lamb losses). We don't always get definitive answers, but we do get useful information. Thanks to information we've received from the lab, we've adjusted our mineral supplementation program to be sure that we are providing adequate selenium - and we always have injectible selenium on hand at lambing. We've also started paying more attention to sources of copper (including irrigation and drinking water in our environment). Having a necropsy performed is an investment in improving our management!
- Author: Dan Macon
I invite you to travel back in time with me - clear back to late October 2021! We'd measured more than 10 inches of rain in Auburn, and we could see the first green shoots of grass emerging through the dry forage. While November was slightly disappointing from a precipitation perspective, we measured more than 12 inches of rain in December - capped off by a crazy, wet, and cold storm just before the first of the year. I'm sure most of us were celebrating what looked like a great feed year when we rang in 2022. But then the spigot shut off - here in Auburn, we've measured just 1.77 inches of rain since January 1 - the driest start to the calendar year in the 20+ years I've kept records. Combining this lack of moisture with warmer-than-normal temperatures and unusual (at least for winter) dry north wind, we are squarely back in drought conditions. In many ways, we seem to be experiencing a more severe drought than last year, at least on our foothill annual rangelands.
Ranchers know that drought is more than just a lack of precipitation. Low rainfall years, provided the storms come at the right time, can produce above-average forage. This year, however, the warm temperatures have brought oaks and other vegetation out of dormancy earlier than normal - this early onset of the growing season in our oak woodlands has increasedevapotranspiration (or soil-water demand). The north winds haven't helped. Before we received an inch of rain on March 14-15, I checked soil moisture in Auburn - and found it to be less than 20% (more like May than March). The rain gave us a short boost, but by the end of last week, soil moisture was back around 25%.
Ourrangeland vegetation reflects these poor growing conditions. Our annual grasses andforbs, by definition, must produce seed every year. In dry conditions, this means that they reproduce and turn brown early and at a shorter stature. Where our sheep are grazing just west of Auburn, I've seen soft chess and annualryegrass headed out this week - a good 30 days early. In a good year, the soft chess will be as much as 18 inches tall; this year, it's done growing at 6 inches. Many of our importantbroadleaf forage plants are maturing equally early - I'm seeing vetch dying back on our shallower soils, and thefilaree is already in the late bloom stage, as well.
These are all red flags from a forage quantity perspective - shorter feed this spring means less residual feed to return to next fall. But early maturity also compresses our forage quality window. Many of us expect a 45-60 day period when we have high quality forage on our annual rangelands - and we set our production calendars accordingly. As these grasses and forbs mature, they decline in quality - providing less protein and energy to our grazing animals. They also become less palatable - in other words, they don't taste as good and they don't provide as much nutrition. The graph below demonstrates that crude protein levels in annual grasses drop below cow maintenance levels between the late flowering and maintenance stages (which we're approaching). If we're trying to put weight on animals, protein levels are deficient by the time we reach the early flowering stage. For more information, check out this ANR Publication (Annual Rangeland Forage Quality).
We're still hopeful that the significant snow pack we built up in December will mean we'll have adequate irrigation water here in the foothills - other regions in the state aren't so fortunate. Given the exceptionally dry conditions, however, I expect we'll need to make at least 2 irrigation rotations over our irrigated pastures to rebuild soil moisture and start growing forage. For us, this means we won't start regrowing irrigated pasture forage following our first graze periods until the end of May.
In light of these impacts, what are some of the strategies we should consider going forward? The basic premise of most drought management strategies is to increase our forage supply (by buying hay or other feed, irrigated early, or leasing new pasture) or reducing our forage demand (by selling livestock or weaning early). Check out our Drought Decision Making Tool for Ranchers for information on how to analyze the economics of these options! This page also includes a new bulletin on early weaning.
As far along as our annual rangeland vegetation is today, another rain won't do us much good - other than perhaps grow some summer annual weeds that may have some grazing value. Rain wouldgive our irrigated pastures a boost, however - at least here in the foothills. We'll see what April brings!
- Author: Dan Macon
I feel like I've said this every year for the last decade, but what a strange weather year we're having! Here in Auburn, we experienced the most intense rainfall in October that I can remember (with more than 8 inches falling in a 48 hour period). November was drier than "normal," but December turned wet and cold. We measured more than 12 inches of precipitation in December at home (including a bit of snow). Just up the hill from us though, record amounts of snow fell - the UC Berkeley Central Sierra Snow Lab on Donner Summit set an all-time record for December with 193.7 inches of snow!
Unfortunately, the Snow Lab set another record yesterday - the longest consecutive period without measurable precipitation during meteorological winter (32 days) since the lab was established in 1971. Today, February 10, marks the 33rd day without rainfall here in Auburn. And our high temperature today is supposed to be over 70F. Despite the promising start we saw in October, we're once again dusting off the drought plan for our small sheep operation.
Every drought, obviously is different - as is every year within a multi-year drought. During the winter of 2013-2014, for example, we went 52 days (from early December through the end of January) without rainfall in Auburn - but we measured more than 14 inches in February and March. In December 2014, we measured over 11 inches - followed by 0.01 inches in January 2014. In the first year of the current drought (2020), we had just 0.03 inches in February, but measured more than 12 inches from March through May. Last year, in contrast, we received just 0.18 inches after April 1.
But rangeland drought is more than simply a lack of precipitation, and rangeland forage production depends on many factors in addition to rainfall. Critically, drought is the interaction of lack of precipitation and soil-moisture deficit driven by high temperatures and increased evapotranspiration. On California's annual rangelands, seasonality of precipitation and climate-soil interactions result different drought impacts depending on the season. While fall drought can obviously lead to winter and spring drought, I found it helpful to think about our own drought plan based on the different impacts we see depending on the time of year.
- Fall Drought: driven by a lack of fall precipitation, fall drought causes a delay in germination on annual rangelands. This can lead to a lack of fall and winter forage (both in terms of quality and quantity), as well as a lack of stock water. Our 2013-2014 drought is a good example.
- Winter Drought: To some extent, California's annual rangelands experience some degree of winter drought most years - the days get too short, and the air and soil temperatures get too cold, to grow much forage. When combined with a lack of precipitation (like in January 2015), this can lead to a lack of both forage and stock water in winter and early spring.
- Spring Drought: This type of drought is driven by a lack of precipitation and warm temperatures in late winter and early spring, leading to increased evapotranspiration and decreased soil moisture. We see perennial plants (including oaks and brush) come out of dormancy early. We may also see our rangeland forage head out early, which results in a decrease in forage quality. Lack of precipitation and dry soils can also result in decreased runoff, impacting stock water availability. Finally, a dry spring (combined with seasonal overstocking of our ranch) can lead to a lack of dry forage next fall. For me, the dry spring of 2021 is a perfect example.
- Summer Drought: While a lack of precipitation is normal in Mediterranean climates like ours, summer drought from a forage perspective is driven by lack of winter snow pack and resulting cuts in irrigation water, or decreases in mountain forage production. With our record low snow pack in 2015, many ranchers didn't receive normal irrigation deliveries. The lack of snow and rapid snow melt last year (2021) meant many high-country grazers in the Sierra had their grazing seasons slashed.
So what does this drought taxonomy mean for our sheep outfit? What kinds of strategies are available to us given the particular conditions in February 2022?
I shared the descriptions above with my colleague Josh Davy (who's the livestock and range advisor for Glenn, Colusa, and Tehama Counties, and who runs his own cattle). He said, "My starting point is to set my stocking rate so that I can survive December and January - those are the toughest months, feed-wise." We've done the same thing - the 2012-2016 drought taught us to be conservative with our stocking rate. Last September, when we turned in the rams, we kept the number of ewes and replacement ewe lambs we felt like we could graze through the winter.
But what about now? We'll start lambing within the next week - which means we've put a year's worth of expense into these ewes to get them to the point where they'll give us something to sell this summer. We're continually looking at the amount of forage ahead of us as we approach our lambing season; we're also looking back to see if the pastures we've already grazed are regrowing. This week's planning meeting was depressing: the forage we've grazed since late December isn't regrowing at all, which means we'll need to rely on what we have left (if it stays dry). And what we have left will only feed the ewes through the third or fourth week of March - we'll be short about 3 weeks (we will move to another ranch in mid-April).
Ultimately, we have two options - we can increase our forage supply (by purchasing hay or grazing difficult-to-access pastures), or we can decrease our forage demand (by selling sheep). As with any plan, there are tradeoffs to both of these approaches - we can increase costs and/or labor, or we can decrease our income. For now, we've settled on the following strategies:
- We'll graze hard-to-fence pastures and move sheep more frequently if necessary up through the first week of lambing. Every extra day we buy now will give us one more day of forage in late March. As the ewes drop more lambs, however, they'll become more difficult to move (which requires more time and effort on our part). Since we typically don't reach peak lamb drop until early March, this gives us a window of about 3 weeks to access these difficult pastures.
- Based on past experience 85-95 percent of our ewes will have lambed by March 31. We may have a few stragglers, but we should be close to finished. If we haven't had an inch of rain by then, and if there's no rain in the 14-day forecast, we'll sort off the ewes that haven't lambed and sell them. Late lambs won't wean as heavy, which means they won't generate as much income. Selling the ewes will reduce our forage demand.
- Based on these strategies, if we get to late March or early April and find we don't have adequate forage for the pairs (ewes and lambs), we'll feed hay until we ship the sheep home for shearing in the third week of April. From that point, we think we'll have enough forage to make it till weaning in late June.
- Finally, if it stays dry through the rest of the growing season, we'll look at further de-stocking to conserve our fall forage. We might sell more ewes, or we might wean the lambs early. We might do both.
These are not easy decisions - ever! But I find that they are easier when we've talked through them and weighed all of our options. And I also find that setting some key dates for implementation helps take the emotion out of the decision - and holds me accountable. Uncertainty, for me, is more unpleasant than making a difficult decision.
- Author: Dan Macon
Predator Protection in Rangeland Livestock Operations
One of the first projects I worked on when I started this job was a publication called Livestock Protection Tools for California Ranchers. Working with a number of other advisors and extension specialists, we took a detailed look at the variety of “tools” that ranchers could use to protect their livestock from predators – everything from livestock guardian dogs to electric fencing, and every predator from neighbor dogs to gray wolves. But as I've studied livestock-predator conflict more thoroughly, and as I've thought about how I protect my own sheep from predators, I've come to think that maybe “tool” is the wrong word. Protecting livestock from predators on rangeland takes a systems approach – one that reflects the overlapping ecology of grazing livestock and rangeland predators. A system that reflects an understanding of human, livestock, and predator behavior – and how these behaviors interact.
I'll use our sheep operation to illustrate what I'm trying to say here. We graze just shy of 100 wool-breed ewes on annual rangeland, irrigated pasture, and irrigated crop land, all within 7 miles of Auburn. The predators we've observed in our environment include mountain lions, black bears, coyotes, foxes, bobcats, domestic dogs, and golden and bald eagles. We also have birds that other producers might include on this list – crows and magpies. We lamb from late February through the end of March (when the grass on our annual rangelands is starting to grow rapidly). We move to irrigated pasture in April. In late June, we wean the lambs and sell most of them; the lambs we keep stay on irrigated pasture, while the ewes move back to annual rangeland. In late August, the ewes come back to irrigated pasture and/or cropland, where they stay through flushing and breeding. In early December, the entire flock moves back to annual rangeland.
Predator pressure varies by location and time of year. We tend to see more wild predators on annual rangeland, although we have seen coyotes in our irrigated pastures. We see more domestic dogs closer to town. We see eagles rarely, but we do see them. We have trail camera photos of a mountain lion within 30 yards of the paddock where we were lambing several years ago. We have too many photos of coyotes to count.
Mostly, we rely on our livestock guardian dogs and our electro-net fencing to keep predators away from our sheep. We know they work – because we've lost sheep where we didn't have both tools (in hard-wire fences without a dog), but I couldn't tell you which “tool” was more important. We've also used FoxLights™ - a randomly flashing light that supposedly deters coyotes and foxes. When we have sheep at home, we'll put them in a secure pen at night (e.g., night-penning) if we need to.
But our system encompasses more than dogs and fencing. We move the sheep every 3-7 days for most of the year. Mostly these are moves to an adjacent pasture, but I suspect the fact that the sheep are never in the exact same spot for very long helps confound the predators to some degree. We add dogs – and more human presence – during lambing, when we're especially vulnerable. We have focused on ewe genetics on maternal qualities – which for us includes vigorous lambs and protective ewes who can keep track of their young.
All of this might seem to be a matter of perspective – or vocabulary! One rancher's “toolbox” might be another rancher's “system.” But as we start talking about impacts from predators, and the costs associated with these impacts, I've come to think we need to take a broader view.
The California Department of Fish and Wildlife received funding in last year's budget to help offset the cost of nonlethal predator deterrents for ranchers. By taking a systems perspective on this question, I think we can help the agency understand that most producers are already doing things to mitigate predator problems. Rather than asking, “what tools are you using?” we should be asking, “How have you changed your management to avoid conflict with predators?” Are there parts of your range you don't use during certain times of year? Are you riding through the heifer field more often? Are you adding extra livestock guardian dogs to your operation so you have enough dog power during lambing or kidding? Are you giving up leases because the predator pressure is just too intense? Some of these are “tools,” obviously, but some are systematic changes to our operations. Regardless, they all have costs. And in my mind, they should all be considered when it comes to any kind of predator deterrent cost-sharing program.
Finally, all of these systematic considerations regarding predators have to fit within the larger context of our ranching systems. Not only do we need to think about avoiding or resolving conflicts with predators, we have to think about our marketing windows. We have to fit our genetics both to our environment and to the marketplace. We need to consider the cost of – and return to – labor (our own labor as well as that of our employees, if we have any). We need to think about short term cash flow and long term investment. We often need to satisfy the needs of our landlords, our families, our bankers, and others connected to our businesses. We have to be good neighbors. This larger context influences the choices we have available to us when it comes to predator protection. For me, the idea of a system (as opposed to a tool box) better reflects the complexity of coexisting with wildlife.
- Author: Dan Macon
If you've been following our effort to demonstrate techniques for bonding livestock guardian dogs (LGDs) with cattle (either on this blog or through my @flyingmulefarm Twitter or Facebook accounts), you'll know that Sam the LGD pup got off to a great start on large cattle operation in Modoc County in 2021. But after their first significant snowfall of the year, and the realization that their heifers would begin calving shortly after the Holidays, the ranch decided that they simply didn't have the bandwidth to continue with the project. In the week before Christmas, I brought Sam back to Placer County – he spent the Holidays with my sheep and one of my mature LGDs, Bodie.
During Sam's “vacation,” I happened to visit with JC Baser, a local cattle producer who has experienced increasing problems with coyotes during his last several calving seasons. JC is on the board of our local Tahoe Cattlemen's Association, and his whole family is involved in their operation. He'd heard me talk about the project at board meetings, and called me one morning to talk in more detail.
The Baser's ranch is typical of many foothill cattle operations. They graze on leased rangeland in the winter time, and leased and owned irrigated pasture in the summer time. Perhaps atypically, however, they've created a great market for show cattle – fair steers and fancy heifers. They're also innovators when it comes to reproductive technology – utilizing artificial insemination and other techniques to continuously improve their genetics. And from the perspective of this project, they're willing to try new things!
After the first of the year, I toured the Baser's winter ranch, where they're currently calving. The following week, I worked with Garrett and Levi (JC and Michelle's sons) to set up an electro-net paddock near their barn. They put four heifers in the paddock; I added Sam. And the demonstration project was off and running in a new location!
Sam is now nearly 8 months old – in the midst of his “terrible teens” (the time period with most young LGDs seem to be puppy enough to want to play but big enough to play too roughly with livestock). As we introduced him to his new environment, he took special interest in JC and Michelle's youngest daughter (who's 5 years old). They've since reported that he continues to be fixated on her when she's nearby – and so they've limited her contact with Sam (since we want Sam to bond with cattle rather than people).
When we introduced Sam to the heifers, he barked a bit and tried to keep them away from us. I walked through the heifers and growled at Sam if he looked like he wanted to chase. Within about 10 minutes, he'd settled in. The heifers also seemed to settle – they were curious about their new fuzzy white pasture mate, but they quickly went back to grazing.
That was all 13 days ago. Yesterday, I visited the Basers and got an update on Sam's progress. They reported that for the first several days, when they arrived (and Sam knew they were there), he would herd the heifers around the paddock, nipping at their heels. On the occasions where they could observe Sam without his knowledge, however, he was content to be with his cattle. Late last week, they added an older dry cow to the mix. Sam tried to keep her separated from the heifers for about 10 minutes, but then settled back down. Today, he was excited to see me – and followed me through the paddock as I went to see the cattle. Once I was back outside the fence, however, he decided he'd rather be with the cattle than watch us – all positive signs.
The Basers also reported that Sam definitely barks at external stimuli – whether it's the rancher next door checking his cattle, or the sound of a coyote. This responsiveness is perhaps the most important tool in and LGDs tool box – in some cases, announcing their presence (through barking and scent marking) appears to deter predators.
Our next steps with Sam will be to introduce several cows with older calves at their sides. I suspect this introduction will be a two-way process – mother cows can be protective of their calves, so they may be more suspicious of the dog in their pasture. Conversely, Sam needs to get comfortable with the entire herd – and with the changes that occur (calving, weaning, etc.) in any commercial livestock setting. I'm hopeful he'll handle this new transition well, but we'll be watching closely.
For now, Sam remains inside an electro-net paddock, which keeps him with “his” cattle. Eventually, we hope that he'll be well-enough bonded with the ranch livestock that we won't need the eletro-net. We'll also work to get him trained to eat from an automatic feeder in a creep-feeding set-up – the labor of daily feeding is one of the drawbacks that many ranchers cite about using LGDs. And, like the final exam we subject our sheep-guarding dogs to, Sam will need to prove trustworthy during the calving process. These are all developments that will hopefully be natural as Sam matures. For now, however, he continues to make the progress I'd expect from an 8-month-old dog.