he's at an age, where everything new might be kinda scarey and he's unsure of it.
If mine was 'bugged' by something, like I remember Masi, at my mom's, she had one of those life size deer statues in her yard, masi basically ignored it , but at one point, it was like she realized it was THERE and WHAT THE HECK IS THAT?
I didn't drag her up to it, but kept saying, "oh get over it, it's no big deal", and I would go up to the deer, pet it, make a big deal over it, and she soon followed and realized WOW it's nothing ! LOL..
Always take a good yummy treats with you,,hand them off to anyone who's willing, and have them drop them on the ground for him,,if he's food motivated, he's soon going to learn people = treat dispensers
) They don't have to pet him, fawn all over him, just drop treats,,let him approach and go from there