Filters: First Letter Of Title is N and Author is R. B. Sibson [Clear All Filters]
Sibson, R. B. (1940). New Zealand Dotterel ( Pluviorhynchus obscurus ). Reports and Bulletins, 1(1), 30-30.
Kinsky, F. C., & Sibson, R. B.. (1959). Notes on the birds of the Poor Knights Islands. Notornis, 8(5), 132-141.
Sibson, R. B. (1942). Notes on the field characters of the Hudsonian Godwit. Reports and Bulletins, 3(1), 63-64.
Sibson, R. B. (1958). Notes on the height reached by some species of birds on the mountains of the North Island. Notornis, 7(8), 213-219.
Chambers, B. S., Chambers, S., & Sibson, R. B.. (1955). Notes on the Hen and Chickens Islands. Notornis, 6(5), 152-157.