Seabirds on Canna and Sanday

We are staying on Knoydart within view of Skye and many of the surrounding inner Hebridean islands. Today we went off by boat to one of the remoter of the Inner Hebrides, Canna together with Sanday which although connected to Canna by a narrow causeway is thought of as a separate island. It was a slightly grey day which was not great for landscape images, but strong for bird images. And there are masses of sea birds on both islands.