1. 
   pecking order
   Type: Term Definitions: 1. in some species of birds and primates, the establishment of a graded dominance in members of a group by the use of aggression.
   Found op http://www.medilexicon.com/medicaldictionary.php?t=63180
   
   
2. 
   Pecking order
   Pecking order or just peck order is the colloquial term for a hierarchical system of social organization in chickens. It was first described from the behaviour of poultry by Thorleif Schjelderup-Ebbe in 1921 under the German terms Hackordnung or Hackliste and introduced into English in 1927. The or...
   Found op http://en.wikipedia.org/wiki/Pecking_order
   
   
3. 
   Pecking order
   Social rank of each horse in a group; one horse is the boss and the others find their place
   Found op http://www.gaitedhorses.net/Articles/HorseGlossary.html
   
   
4. 
   Pecking Order
   [game] Pecking Order is a card game, where players try to claim the best feeding spots in the jungle by playing their birds on the perches and determining who is stronger. It was published by Winning Moves Games USA in 2006 as the first game in its Immortal Eyes line. == Gameplay == The game...
   Found op http://en.wikipedia.org/wiki/Pecking_Order_(game)
   
   
5. 
   peckingorder
   1) Kiss me 2) Social hierarchy
   Found op http://www.mijnwoordenboek.nl/EN/crossword-dictionary/peckingorder/1
   
   

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