"A Visionary in Paleontology:" Operating from Hill City, SD, for over 50 years, Peter Larson heads Black Hills Institute, the world’s largest private fossil company. Internationally known for work with T. rex specimens Sue and Stan, he has authored over 80 scientific articles, shaped federal fossil collection policy, and built a collaborative community spanning business, academia, and government. Peter believes discovery is richer when done together. [press release]
interested party
Snarking up The Right's tree: a blue view of red state failure
5/14/26
Larson inducted into SD Hall of Fame funded in part by Earth hater adversary Schieffer
5/13/26
Montana loses attempt to block Native voting
A Montana district court has blocked a new state law that would have reduced Election Day voter registration hours, ruling that the measure likely violates the constitutional right to vote and disproportionately harms Indigenous voters living in rural reservation communities. The law, passed during the 2025 Montana Legislative session, would have eliminated the final eight hours of Election Day voter registration access across the state. Civil rights organizations argued that the state failed to justify the restrictions imposed by the legislation. [Montana Court Blocks Law Limiting Indigenous Voters’ Access to Election Day Registration]
Indian Country has won victory after victory by relying on protections in the Voting Rights Act. The U.S. Supreme Court’s decision in Callais weakens the safeguards guaranteed under Section 2 of the VRA, undercutting a critical tool for defending voting rights. Learn more: buff.ly/oyhcHej
— Native American Rights Fund (@nativerights.bsky.social) May 6, 2026 at 3:05 PM
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The SAVE Act is drawing criticism from Native American civic groups concerning its impact on Native voting rights. The bill would require proof of citizenship documents to register to vote, raising questions about whether Tribal IDs can be used. #VotingRights #NativeVote @fdnv.bsky.social
— Public News Service (@publicnewsservice.bsky.social) February 19, 2026 at 12:00 PM
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5/9/26
Guest post: free-roaming horses are unsustainable
Editor’s note: in 2018 my trail camera caught a cougar drinking at the trough under the windmill so when The Horse Shelter just east of Cerrillos reported two foals were killed a few years ago nobody was very surprised. An Appaloosa mare that foaled in 2023 showed up without it several weeks later so the logical conclusion was that a cougar took it. She just delivered again and the local herd has doubled in size hooking up with another probably from the Kewa Pueblo.
DEAR WILD HORSE ADVOCATES: You can't have it both waysOne of the biggest contradictions in modern wild horse debates is hearing people insist that every family band must remain completely intact while also arguing that inbreeding is a major concern. Those positions are not fully compatible under basic population genetics.Family bands are social structures, not genetic management units. Long-term genetic health depends on effective population size (Ne), breeding diversity, dispersal, and gene flow (Waples et al., 2013; Hoban et al., 2021). When populations become smaller, geographically restricted, or behaviourally closed, relatedness and homozygosity increase over time because the same lineages repeatedly breed within a limited population pool (Thompson et al., 2024).Importantly, wild horses do not naturally remain in their natal bands forever. As horses reach sexual maturity, young stallions typically disperse from their birth bands, and some mares disperse as well (Linklater, 2013; Nuñez et al., 2016). This natal dispersal is a normal behavioural mechanism that promotes gene flow and reduces close inbreeding in free-ranging horse populations (Linklater, 2013). Preventing movement between groups or restricting populations into isolated management areas interferes with those natural dynamics.In free-ranging horse populations, most foals do not remain permanently in their natal band once they reach sexual maturity. Both colts and fillies naturally disperse, although males usually leave earlier and more consistently than females. Dispersal is a well-documented behavioural mechanism that reduces inbreeding risk in equids (Feh, 1999; Berger, 1986).There is no single universal percentage because dispersal rates vary by habitat, density, stallion turnover, and herd structure, but studies consistently show that the majority of offspring eventually leave their natal group. Feh (1999), studying semi-feral horses, reported that dominant stallions expelled approximately 82–84% of daughters, greatly reducing opportunities for sire-daughter breeding.Actual sire-daughter breeding rates in naturally functioning herds are relatively low, but a consequence of restricting dispersal of family bands. Berger (1986) found that only about 3.9% of matings involved fathers and their genetic daughters in a free-ranging horse population. Feh (1999) later found somewhat higher rates (~10–11%) under certain conditions, particularly when normal dispersal patterns were disrupted or when horses had prior captive management histories.These findings demonstrate that horse societies are dynamic, not static “family units,” and that natural dispersal behaviours play a major role in limiting close inbreeding. Corona, from Sand Wash Basin, has been observed exhibiting reproductive behaviour with his presumed daughters on numerous occasions, with observations suggesting the pairings may have produced a foal.At the same time, many advocates oppose nearly all removals, the introduction of horses from outside, and the disruption of existing bands. But if populations remain closed with limited dispersal and limited external gene flow, close relatives will inevitably breed over time, particularly in smaller herds or fragmented habitats (Hoban et al., 2021; Thompson et al., 2024).Modern conservation genetics, therefore, focuses on maintaining an adequate effective population size and preserving gene flow, not simply preserving every social grouping indefinitely (Frankham et al., 2017; Hoban et al., 2021). Social stability matters, but it cannot replace population genetics.You cannot simultaneously argue that:1. No horses should ever be removed,2. Family bands must remain permanently intact,3. Outside gene flow should be restricted or prevented,4. There will be no increase in inbreeding risk.Those arguments fundamentally conflict with established conservation genetics principles.----------------------------------------References:Berger, J. (1986). Wild horses of the Great Basin: Social competition and population size. University of Chicago Press.Feh, C. (1999). Alliances and reproductive success in Camargue stallions. Animal Behaviour, 57(3), 705–713.Feh, C., & Munkhtuya, B. (2008). Male infanticide and paternity analyses in a socially natural herd of Przewalski’s horses: Sexual selection? Behavioural Processes, 78(3), 335–339.Frankham R, Ballou JD, Ralls K, et al. Genetic Management of Fragmented Animal and Plant Populations. Oxford University Press, 2017.Hoban S, Bruford MW, Funk WC, et al. Global commitments to conserving and monitoring genetic diversity are now necessary and feasible. BioScience. 2021;71(9):964-976.Linklater WL. Adaptive explanation in socio-ecology: lessons from the Equidae. Biological Reviews. 2013;88(1):182-198.Nuñez CMI, Adelman JS, Mason C, Rubenstein DI. Immunocontraception decreases group fidelity in a feral horse population during the non-breeding season. Applied Animal Behaviour Science. 2016;183:13-17.Rubenstein, D. I. (1986). Ecology and sociality in horses and zebras. In D. I. Rubenstein & R. W. Wrangham (Eds.), Ecological aspects of social evolution (pp. 282–302). Princeton University Press.Thompson MA, McCann BE, Rhen T, Simmons R. Population genomics provide insight into ancestral relationships and diversity of the feral horses of Theodore Roosevelt National Park. Ecology and Evolution. 2024;14:e11197.Waples RS, Luikart G, Faulkner JR, Tallmon DA. Simple life-history traits explain key effective population size ratios across diverse taxa. Proceedings of the Royal Society B. 2013;280:20131339.Cresciente (dun) & Poseidon (black/dark bay)Sand Wash Basin, Colorado, 2017
5/8/26
Corps warning of low Missouri River levels as pipeline boondoggle doubles in price
The United States Army Corps of Engineers says April 2026 runoff in the Missouri River Basin above Sioux City, IA, was 51% of average– or 1.5 million acre-feet. John Remus, chief of the Corps’ Missouri River Basin Water Management Division, says dry conditions are present in 74% of the basin. He says drought conditions are expected to persist through July with some expansion likely in Montana and South Dakota. As a result, the runoff forecast was lowered by 0.7 MAF from last month. [Missouri River upper basin runoff forecast lowered due to dry conditions]South Dakota receives zero dollars for hydropower generation but eminent domain forces transmission lines to be built so how is that in the state’s best interest? Silt deposits are the responsibility of the state so AG Jackley should sue the mining and ag industries for that runoff instead of blaming the Corps.
“'Ultimately a lawsuit was filed in 2003 [and] the federal court judge held for liability against the United States and held that they were the proximate cause of injury. That was back in 2022. As I sit here today, the United States still has not resolved that case. It has created major problems with the environment and other concerns. The United States held that trust lands that involved ranchers and native americans [sic] have no property interests. And equally so on range units – where you combine parcels of land – set up by the BIA. They ultimately determined that that also is not a property interest. So they put these ranchers in jeopardy of their farming operations by bad decision they’ve used the civil courts to drag out litigation,' said AG Jackley." [Jackley, Sullivan, Byfield speak in House lawfare roundtable]With irony as a casuality US Senator Mike Rounds continues to push for legislative changes to the Corps' Master Manual to prioritize flood control over the threatened piping plover and endangered pallid sturgeon and demands better mitigation strategies for the Missouri River basin.
