There was no predictive association (Goodman & Kruskal index of predictive association in Hays 1963)
between mates for the establishment of incubation during the 1-hr test. Nor was there any predictive association
between the males and females for latency to stand on the nest or to establish incubation during the 1-hr test.
However, the chance of error in predicting whether the male spends a long or short time on the nest is reduced
about thirty-seven per cent on the average, given the information as to whether his mate spends a long or short
time on the nest. That is, the male's time on the nest seems to be somewhat influenced by the female's time on
the nest; the longer she is on, the shorter he is on. There was no predictive association for the female's time on
the nest, given information