When Honey Bear is awaiting the boat to take away (first time round), she is seen sitting on her suitcases and trunks. Then she walks down the slope with just her umbrella in her hand, bids Marswell good bye and hops in the boat. The captain lifts the gangway and off they sail away, forgetting her bags on the shore.
When searching for gorillas, there is a cut from the row of beaters, who are entering the brush in what is clearly a dry season, to a studio set of intensely green jungle.
The group flees the Samburu area by canoe but by the time they are heading for the gorilla country they have a wagon drawn by oxen. When Eloise departs, it is near gorilla country, with Victor saying that he was going back to capture some gorillas. Eloise leaves with the canoes. The purpose of the wagon footage is a mystery, presumably thrown in because Ford liked the footage.
When the trio are singing around the piano, Brownie can be seen standing close to Nordley on Nordley's right-hand side. However in the shot of Marswell in the doorway, only Nordley can be seen at the piano in the background - Brownie has disappeared.
Victor's house doesn't have screens, despite the fact that it is on a river. By twilight, the place would be absolutely swarming with mosquitoes and the lights would attract all sorts of insects.
When they first arrive at the edge of the gorilla area, a large group of beaters are arrayed at the edge of the jungle. This would not be done when searching for gorilla. The beaters would not be necessary until the next day, when they trap the gorillas.
Quinine pills would not have any positive effect on Donald. It is used to prevent malaria, and not very effective at that.
In this film, gorillas are depicted as being highly aggressive. In fact, they are gentle-natured and do not show aggression unless threatened. Even then, their approach is that of intimidation rather than sudden violence. With the modern-day agricultural encroachments into traditional gorilla lands, gorillas are often seen passing through the farm fields and completely ignoring the workers.
During the evening following the first gorilla encounter, the porters entertain themselves with drumming and singing. While this might be a normal activity back in the village, doing it in close proximity to the gorillas would drive them away.
When Honeybear is having dinner with Marswell, Brown-Pryce and Koltchak on her first night, it is visibly dark outside as Marswell had earlier told her dinner would be at 9:00. But when the servant comes running in calling for the men, it is clearly broad daylight as seen through the doorway.
After Victor rescues Mrs Nordley when she wanders off, a sudden storm blows in. But only the trees and bushes near the actors are blown about by the 'storm', the trees visible a short distance behind them are completely calm.
A great deal of the dialogue was looped in and not in the best of settings. A common issue with this film is that louder bits of dialogue generate a noticeable amount of natural reverb, which would not be present in settings like tents.
When driving across and through the bush, interior shots show virtually no jostling at all. As they are in a Land Rover with its typically firm seats and no seat belts, they should have been bouncing around quite a lot.
As Victor and Eloise argue on the deck, she is holding a cigarette between the index and middle fingers of her left hand. At one point, she folds her arms. She should have reacted to the cigarette now burning her, but doesn't. When she unfolds her arms, the cigarette remains between her fingers, and intact.
During the gorilla footage - shot separately from the rest of the film - the gorillas are shown eating pineapples, which, while being grown in ZImbabwe and Cote d'Ivoire, are not native to the region of Africa in this movie.
The geography in the film is a mish-mash of locations. The location of the compound could be in Kenya or Tanzania, but gorillas in eastern Africa are only found in Rwanda and Uganda. In addition, there is also a statement that the camp could only be reached by boat, but that doesn't square with the location.
When Marswell shows Linda "gorilla country," he points to a large almost treeless valley, which is nothing like the densely forested mountains where gorillas live. There is also mention of being light-headed from the altitude, which is a bit off as well. Nairobi is a mile high and where they are headed is perhaps a thousand feet higher. Considering the distance covered and the time it would take to get there, the gradual change in altitude would be unnoticeable.
A cheetah walks through Honey Bear's tent late one night. Cheetahs are diurnal, hunting only during the day and sleeping at night.
As Linda is a rank novice, rather than simply handing the binoculars to her, Victor should have used them first and adjusted the focus.