The number of breeding pairs of penguins nesting in the Admiralty Bay region during the 1979/1980 summer was as follows: Pygoscelis papua — 3703, P. adeliae— 32918, P. antarctica — 8237. Due to diverse preferences in selection of the breeding-site environment and varying numerousness and structure of the colonies of these species the conditions of the outflow of faeces to the sea varied considerably. Long period records of the populations of penguin colonies around Pt. Thomas and Llano Pt. show increase in the number of breeding pairs of P. papua and P. antarctica and an increase in the number of P. adeliae at Llano Pt., while at Pt. Thomas the data approximate the records for the summer 1909.