Identification: Clearing out blackberry bush and came across something.

Trying to make the area where live better by clearing litter, which has lead to me clearing out black berry bushes as their full of garbage people have tossed into them or dumped. Came across this plant and not sure what it is and if it is native or not. I've intentionally avoided it and focused on the black berry vines, but wanted to make sure it was not some invasive species I'm inadvertently giving space to the spread.

Oh and don't worry the fern in the picture will be left along as well - at least I know what that is...

 

Looks like a native salmon berry, Rubus spectabilis .

 

Yes, definitely. A quick way to ID salmonberry is by (gently) folding back the central leaflet and seeing if the two side leaflets end up looking like a butterfly.