Well I give my birds corn on the cob raw not cooked at all, I take a ear lay it on cutting board and cut into about 4 or 5 rings then I cut those in half,the finches will completly eat every spec of it ,sengals,nandy,cocetiels,they eat every kernel.
But corn has a lot of surgar so I only give about twice A week,
I do remove the hulls and silk stringy things.