Color-wise, pronghorn will perceive shades of gray like other ungulates, but they are HIGHLY tuned to picking up motion first, forms second. This is why they can detect danger before it attacks -- because they don't take their eyes off of anything that moves.
That being said, color doesn't matter all that much to them. They'll eat plants of any color, so long as they have leaves. That being said, the more yellow/golden the plant, the better for consumption. Pronghorns are very sensitive to green plants, especially young ones. The smell alone will make them want to move on. If you come across a field full of young plants, go ahead and eat as many as you want!
As far as adults are concerned, they won't touch anything with green leaves. The only time this behavior changes is if something else wants their food...like predators. Then color becomes important because it signals safety or not.
In conclusion, pronghorns are blind, but that doesn't mean they can't see color. It's just that it doesn't matter all that much to them. So feel free to eat fruit of any color or age, but leave the young plants alone unless you want more than just dessert.
Pronghorns are named for the conspicuous pair of horns that protrude from the top of their heads. The horns are two-pointed and formed of bone, with a keratinous coating that is lost and regrown yearly. Scientists once thought that prehnorns were monotypic, which means there was only one species with these horns. However, recent research has shown that there are three distinct species: P. prionochilus, P. maximus, and P. leucopus.
When pronghorns first appear in the fossil record about 10 million years ago, they were much smaller than they are today. Over time, they evolved larger bodies and longer horns to be better able to compete with other herbivores for food. Today, all three species can be found across North America in open prairies and desert shrublands at least part of the year.
Horn size varies between species and even within populations of the same species. Larger animals tend to have horns with deeper grooves and more nodes (growth centers where horns meet the skull). Larger horned animals are also likely to be older so there's not as much growth per year compared to younger animals whose horns grow faster but are still relatively small.
Scientists think that the bigger animals may be winning contests with other large herbivores such as mastodons and giant deer.
Pronghorns may be found on the Great Plains of North America and as far north as northern Mexico. They are found in southern Saskatchewan and southeastern Alberta in Canada. While they are capable of jumping, they are unable to overcome the fences that have become ubiquitous throughout the grasslands. Therefore, they are considered a game animal.
There are three species of antelope found in Canada: the elk, the moose, and the pronghorn. All are members of the deer family (Cervidae). Elks can be found from coastal British Columbia to Newfoundland while moose are restricted to northern forests. Pronghorns are found in western Saskatchewan and eastern Alberta.
These animals are important to humans because we use their skins for clothing and other products. Also, meat from these animals is used for food. In fact, elk and moose are two of the most popular meats in Canada after beef. Finally, antler products such as bows and arrows are made from elk and moose antlers.
Elk and moose were originally found only in North America but have now been introduced into Europe and Asia as well. However, pronghorns are native to North America.
There are several factors that affect how many pronghorns there are today including disease, hunting, and competition with livestock for food and habitat.