Cause is from an infection known as hemorrhaging fever
Except the c) sweat gland
Can you explain the question a bit more too me? Idk I don’t understand it:)
The way that you could use molecular biology to determine whether these birds have evolved from a shared common ancestor is to take a look at their proteins, RNA, and DNA. Because the more similar these things are in the two types of birds, the more possible it is that they are somewhat connected via a common ancestor.