In response, the entomologist John Jenner Weir conducted experiments with caterpillars and birds in his aviary, and in 1869 he provided the first experimental evidence for warning coloration in animals.
En resposta, o entomólogo John Jenner Weir realizou experimentos con eirugas e aves no seu aviario, e en 1869 proporcionou a primeira evidencia experimental da coloración de advertencia en animais.