swamp dig spade worker man drone aerial puddle protection conservation nature out build amphibian frogs breeding new

swamp dig spade worker man drone aerial puddle protection conservation nature build amphibian frogs breeding new excavate pit pond hand wetland marsh finding water bog europe out pool spadeful excavator dredger digger high biodiversity frog morass firebellied toad common spadefoot digging shovel mud grounding siltation wetlands scoop lakes slough landscape