Factual error: 3-24 "Auld Lang Syne": The Apache spearhead Buck appropriates is very obviously made from machine-tooled steel. Indian tribes in 1870s Arizona made their weapons points from hand-knapped stone and on rare occasions, iron. They never developed steel-making technology.

Visible crew/equipment: 3-18 "The Guns of Johnny Rondo": When Rondo and his son Dan ride through High Chaparral's gate, there are tire tread marks visible in the dirt.

Plot hole: 3-8 "Apache Trust": Somewhere in old Tucson, there must have been a merchant with dozens of identical hats to sell. Here, as in other episodes, Blue's hat is lost somewhere in the desert when he's captured by the Apaches. By the next episode, though, he has it (or one just like it) back again. Lost horses, sometimes even after being killed, had a similar habit of reappearing alive and well in the following week's episode.

Continuity: 3-20 "The Lieutenant": A heavy black bag falls from the Simmons' wagon as they pull away from their house. A short time later, it has disappeared from the spot where it landed.

Continuity: 4-14 "The New Lion of Sonora, Pt. 1": When Buck tries to comfort a bereft Manolito, Mano is sobbing and leaning his forehead against a tree trunk. But when the shot reverses angles, he's abruptly standing upright a foot away from the tree.

Plot hole: 4-13 "The Badge": This episode comprises a flashback to the year 1866, but it sets up a chronology that completely contradicts the rest or the series. It contends that the Cannons moved west to Arizona in 1867. In the pilot and throughout the series, it was stated that they arrived in Arizona in the 1870s, at least ten years after the U.S. Civil War.

Revealing: When the Apache war party starts its charge toward the High Chaparral, the dirt road beside them shows clear tire tread marks from the camera truck.

Continuity: Sam walks out of the saloon without his gloves on, but emerges into the street wearing them in the very next shot.

Revealing: The substitution of a "stunt horse" is noticeable here when Blue is thrown during an Apache attack. Before he falls off, his palomino horse has its usual blond mane and tail. But when the horse rears and he falls, it's another palomino with a grey mane and tail. The blond one is instantly back, though, when Blue gets up.

Continuity: Manolito leaves the ranch on a black horse that changes, mid-ride, into his regular brown sorrel, "Macadoo." In later shots of the same ride, the black horse is back, but when Mano dismounts, he's with Macadoo once again.

Audio problem: After the Apaches rescue Blue, Buck signs to their leader and says, "Vaya con Dios to you too, brother." But his lips never move.

Continuity: When Manolito rides up to the house, Buck is grooming his horse, Rebel, while standing beside the animal's left flank. After a very brief cut to Mano and back, Buck is suddenly on Rebel's right flank, without enough time to have moved there.

Factual error: Dan's wanted poster features a high-resolution 20th Century photo. In the 1870s, particularly way out west in frontier Arizona, the technology to reproduce and print photos like this was non-existent. Wanted posters sometimes had sketches of outlaws, but most often, they contained nothing but the name, reward amount, the crime, and a written description.

Visible crew/equipment: In the final scene, light patterns from studio reflectors are moving on the sleeve of Blue's shirt. He's on horseback in the middle of the desert and is nowhere near water, shiny metal, or anything else that could cause such light reflections.

Continuity: Mano's horse is shot and killed by the Apaches. But when we see a shot of the "dead" animal, it's not Mano's, but the horse Buck was riding (with a distinctive white blaze on its forehead). Apparently, Buck's horse was better at playing dead.

Revealing: The dead soldier is still holding the coin with which Manolito paid him for the horse. But when the camera pulls in close, it becomes apparent that the "coin" is actually a blank disc.

Continuity: While Buck and Mano are chasing the Apaches, Mano's mount changes from a horse with a blond mane and tail to one with an all-brown mane and tail and back again.

Continuity: As Victoria tends to him, the blood stains on El Tigre's bandages keep changing positions and patterns between shots.

Factual error: In the final battle with the Apaches, Blue and most of the rest of the Chaparral men fire their 6-shooters dozens of times without ever reloading.

Revealing: When Blue rides in with Moon Fire and Kelly, there are footprints visible in the dirt behind them. Several of the prints have distinctive patterned tread from what could only be 20th Century rubber-soled shoes.