A map of observation records of yellowhammers from the date of first introduction 1864 to 1900, based on reports from newspapers and from Drummond (1906).

 
 
  Part of: Pipek P, Pyšek P, Blackburn TM (2015) How the Yellowhammer became a Kiwi: the history of an alien bird invasion revealed. NeoBiota 24: 1-31. https://doi.org/10.3897/neobiota.24.8611