The Titi Wainui or Fairy Prion, Pachyptila turtur (Kuhl). Part II.*Part I has appeared in Vol. 74, pp. 32–48 of the Transactions. By L. E. Richdale. Department of Zoology, University of Otago. [Read before the Otago Branch, September 14, 1943; received by the Editor, September 17, 1943; issued separately, September, 1944.] This paper is a continuation of the life story of the Titi Wainui as already narrated in a recent part of the Transactions. It opens with a detailed study of the chicks during their last few days ashore. Following this, appears an estimate on an important section of the community—the unemployed birds. Next are given data concerning weights and measurements of the growing chick before concluding with a section on the adults. The latter includes population statistics and a discussion of Pachyptila turtur on other breeding grounds. The Departure of the Chicks. By ascertaining the hatching and departure dates of 66 chicks I was able to work out the time they remained in the burrow. This period varied considerably from 44 to 55 days, giving an average of 49.35 days. The standard deviation is 2.81 days and the PE m .23. In the table below is shown the time ashore for the 66 chicks broken up into class intervals of 3 days with the number of chicks departing in each interval. Table XI. Time Ashore of 66 Chicks in Class Intervals of Three Days. Class Interval in Days. No. of Chicks. Class Interval in Days. No. of Chicks. 44 to 46 days 11 50 to 52 days 18 47 to 49 days 26 53 to 55 days 11 Table XII. Amount of Down Left on 66 Chicks Whose Time Ashore is Known. Amount of Down. No. of Chicks. Patches 1 Traces 7 Trace 34 1st day without down 16 2nd day without down 5 3rd day without down 1 4th day without down 1 5th day without down 0 6th day without down 1