2 Yellow flowers ID please

I think the second one may be a buttercup it was growing on a river bank thank you poppy :-D

 

The first one looks a lot like a little poppy, it could be Meconopsis cambria. The second one looks like a buttercup.

 

could the first be Wood Poppy - Stylophorum diphyllum?
see if the leaves match.
see if #2 might be either Marsh Marigold (Caltha palustris), or Lesser Celendine (Ranunculus ficaria) both members of the buttercup family.

 

I think I have that bottom one. Spreads like wildfire