A fungus or an insect?

I was out at the Farm cleaning up the old dead trees when I noticed many of the shrubs and trees in the shelter belt had these orange specs all over them. They kind of look like some kind of insect eggs but after doing a little bit of searching on the internet I’m wondering if this is a rust fungal infection? If you can shed some light on it for me, please let me know. I’m not sure what I can do since it seems to be a pretty large infestation in my shelter belt and yard trees. It doesn’t affect all the plants, only a few varieties.