I moved into a 6 year old house about 4 months ago. There are some gaps in the hardwood floor. I didn't notice them before, could they get bigger seasonally?
Sorry about the lousy photograph, but it is probably good enough.
This is much bigger than any other gaps, but there are lots of small ones.
Can I fill them in with wood filler? Or maybe I should wait until August and fill any gaps in then?
Any advice would be appreciated.

Sorry about the lousy photograph, but it is probably good enough.
This is much bigger than any other gaps, but there are lots of small ones.
Can I fill them in with wood filler? Or maybe I should wait until August and fill any gaps in then?
Any advice would be appreciated.