Hey ! Those guys are all the same size. Looks like some cow had triplets.
They also look like they aren't fully mature; maybe two years?

We saw a set of twins up at Mount Blue in Weld this spring. They weren't as much as a year. I just knew that Mama would be along any moment, so I wouldn't let the New Yorkers out of the car. They were a little cross with me until Mama DID show up. She snorted and looked like she might charge us. I turned the headlights off and backed up ten yards or so. Then she took her babies off into the woods.
It was spring time and muddy, but we couldn't find ANY tracks where they left the road. What a marvel!

So, did you take that piture?