Question

Expenditure of classification of animals​

Answer 1

Answer:

recent article by Kleindorfer et al. (2014) has made a strong case for animal teaching in superb fairy wrens (Malurus cyaneus). The article built upon a previous experiment showing that fairy-wren incubation calling met 2 criteria in the Caro and Hauser (1992) functional definition of animal teaching. Wrens sang an unique call—an incubation call—only to their embryonic young (Criterion 1), and those young learned the song better than young without such demonstration, allowing mothers to later distinguish wrens from cuckoo chicks (Criterion 3) (Colombelli-Négrel et al. 2012). The 2014 article showed that incubation calling in the wild was correlated with the cost of increased predation on eggs. Also, experimental broadcasting of incubation calls attracted predators and increased predation on eggs compared to no-call controls. The main claim of the study was that incubation calling was an example of animal teaching because calling was costly to the parent (Criterion 2).