aberrant

1. 1

   Differing from the norm.

2. 2

   Straying from the right way; deviating from morality or truth.figurativelysometimes

3. 3

   Deviating from the ordinary or natural type; exceptional; abnormal.

   • The more aberrant any form is, the greater must have been the number of connecting forms which, on my theory, have been exterminated.

1. 1

   A person or object that deviates from the rest of a group.

2. 2

   A group, individual, or structure that deviates from the usual or natural type, especially with an atypical chromosome number.

   • Also I think other birders realise you are struggling a bit when you start talking about aberrants[.]

syn. freak