'The signalling function of courtship movements', 9pp typescript. 'Fighting and threat as means of spacing out', 8pp typescript. 'An explanatory theory of courtship', 9pp typescript.

A talk in the BBC radio 'Tuesday Talk' series, 5pp typescript.

Script. 'Signals for survival' was introduced and photographed by Tinbergen. The film won the Italia Prize for Television 1969 (documentary category).

Correspondence regarding distribution of the film and publication of the text (with photographs and sketches) as a book.

Contracts. Tinbergen supervised a series of 13 films on animal behaviour which were coproduced by Windrose-Dumont-Time, Hamburg and the BBC. He made two of the films himself, one on tracks and the other on the oystercatcher. The film series was broadcast in 1973 on BBC2 under the general title 'Their World'.

Correspondence regarding the film series.

Correspondence regarding the film series.

Correspondence regarding the film series.

General notes and plans for the film series.

Post-production film script: "Tracking".

Post-production film script: "The Specialist".

Correspondence regarding distribution of the film and publication of the text (with photographs and sketches) as a book.

Correspondence regarding distribution of the film and publication of the text (with photographs and sketches) as a book.