References
- Brothers , R.N. and Hopkins , J.C. 1967 . Igneous rocks and hornfelses from the Hen and Chickens Islands . Trans. R. Soc. N.Z. Geol. , 5 : 123 – 9 .
- Hutchinson , G.E. 1950 . The biogeochemistry of vertebrate excretion . Bull. Am. Mus. nat. Hist. , 96
- Skegg , P.D.G. 1964 . Birds of the Hen and Chickens Islands . Notornis , 11 : 159 – 76 .
- Sladden , B. 1924 . Karewa: an island sanctuary . N.Z. Jl Sci. Technol. , 7 : 182 – 7 .
- Thompson , B.N. and Wodzicki , A. 1967 . Geology and mineralisation of Coppermine Island Hen and Chickens Group . N.Z. geol. Survey Rep. , 25