Rd Brown 1768 Silver's Petrel McKean Island 16 Oct. a nest site. Birds sitting or eggs definitely call. Most of the nest sites I found were detected by hearing the birds call. All these marked nests had one parent calling from 2-3 eggs. The bird or egg which calls, however, do so in a slight tone than individuals calling from an empty nest site. I have no idea as to which sex (if not both) are calling. 20 Oct. Banded 12 birds tonight and found only one return in this group (it was abandoned). The other few returns have been in very good shape and so have been left on as I have no more metal bands to put on them. The return tonight was quite worn (652- 6604) as on 5. Now banding 1103 - 07081 put on a bird in the rock wall had its feathered head pitted on 16 Oct was found tonight with a small chick. Possibly the 07 does not get a bare breast patch ? The species is quite numerous and apparently nests in a peak of nest Candy finding and egg laying, calling Obviously some birds have been at it for some time. Almost every concentration of rocks or walls that I have passed along the entire W side (and NW) have had Silver's calling from them. I have not heard any on the SW, S and E sides of the island in rocky areas there. One variation in the normal "whoof, whoof" calling is that on the last two calls, a definite shortening and quick- ing as often heard, the steady whistling. Rd Brown 1768 Silver's Petrel McKean Island 20 Oct. may go on or in a regular rhythm for 20+ calls or may be in a series of 4-5 or a few more. Birds call apparently just as frequently from egg as empty nest cavities and chicks are heard was definitely calling from a burrow with a small chick. All nest sites so far have been in rock crevices. Very little nesting material is brought in - perhaps a few pieces of straw or feathers make up to only great material. There are most likely shells and ends which are already in the nest cavities. All that I have had our birds injected thus for has been an orange oil substance. Last night an unmarked nest sometime between 1800 tonight and 2330. Since the nest cavity was artificially enclosed the only thing I can figure is that maybe these birds which crawl around in the rocks get egg. Certainly no cormorant could have gotten it. There was no trace of shells or anything. 21 Oct. Banded 6 adults tonight. One pair had banded chicks, two other with father's. I believe maybe the P.O.F. are going in getting their food, patches bare or maybe even some don't get them, bare. Two single and the pair were calling from empty nest cavities; two other single were calling from or fresh eggs. All nests in rock crevices, mainly SW and just SE 10 away in the Wood (Rocky Tumbles) down way areas.