Hello!
As always, the photos are of excellent quality!
A work that demonstrates careful research at ground level to give us a result worthy of complete enjoyment.
Regarding the number of photos in a post, I infer it depends on the purpose of the post, whether it responds to a contest or challenge, in addition to taking into account the community where it's shared. I've seen many criteria. Some people think five photos are too few and suggest closer to ten. But, personally, I've sometimes seen posts that manage to convey much more with just one photo than others with fifteen.
The important thing is that the post has quality and a coherent meaning.
Big hugs!