public void removeDied(animal a)
{
if (a.IsDied == true)
{
animals.Remove(a);
if (a.type == "bird")
{
birds.Remove(a as bird);
}
if (a.type == "mammal")
{
mammals.Remove(a as mammal);
}
}
}
public void add(animal a)
{
if (a.age < 10)
{
animals.Add(a);
if (a.type == "bird")
{
birds.Add(a as bird);
}
if (a.type == "mammal")
{
mammals.Add(a as mammal);
}
}
a.animalZoo += removeDied;
}