Penguins at roost (in homes, bookshops, bouquinistes, market bins, libraries, etc) or out and about in the hands of a reader. Singly or in huddles.
They've been around a very long time and now have a world-wide habitat, so there are many, many, many sightings to be documented.
Also signage, adverts, mugs, t-shirts, tantalizing ephemera.
Penguins driving their little Penguin lorries, shots of their offices, the Harmondsworth colonies, and the twice daily parade at No.80 the Strand. Yes, and the many Allen Lane look-a-likes, all those fab book launches, etc., etc.
And let's not forget Puffins, Pelicans, and Peregrines.
