Question

A scientist argues that two species of birds are the same species because they have similar body structure, similar DNA, and similar beaks because they eat the same food. The birds do have some variations in color patterns and have a different mating season. Which piece of evidence would go against this argument and suggest that the birds are actually different species?

Answer 1

Answer:  

Birds have a different mating season this evidence will go against the argument and suggest that the birds are actually different species. Generally, two factors seasonal and behavioral identifies the differences among the species. Species generally interbred among the same population of species according to the season and hence they loose mating opportunities.  Although being sexually compatible they do not interbreed. Behaviorally, a biological clock in species naturally sets breeding cycle according to the resources availability, suitable nesting sites and mating opportunities. Different species have different seasonal requirements to accomplish this.