diff --git a/data/core/encyclopedia/drakes.txt b/data/core/encyclopedia/drakes.txt
index 3afb6895ac3..a9b6c779675 100644
--- a/data/core/encyclopedia/drakes.txt
+++ b/data/core/encyclopedia/drakes.txt
@@ -11,19 +11,7 @@
 [topic]
     id=aerie
     title= _ "Aerie"
-    text= _ "A very large castle-like structure that is home to a <ref>dst='flight' text='flight'</ref>. It contains the <ref>dst='breeding_pen' text='breeding pens'</ref>."
-[/topic]
-
-[topic]
-    id=breeding_pen
-    title= _ "Breeding Pen"
-    text= _ "The portion of an <ref>dst='aerie' text='aerie'</ref> where the nonsentient <ref>dst='breeder' text='Breeders'</ref> live under the <ref>dst='dominant' text='Dominant'</ref>’s eye."
-[/topic]
-
-[topic]
-    id=breeding_cycle
-    title= _ "Breeding Cycle"
-    text= _ "The time that passes between one <ref>dst=egg text='egg'</ref> laying to the next."
+    text= _ "A very large castle-like structure that is home to a <ref>dst='flight' text='flight'</ref>."
 [/topic]
 
 [topic]
@@ -56,12 +44,6 @@
     text= _ "The drakish tradition of perpetual expansion and conquest. This term is mostly used by the members of the <ref>dst='spiral_path' text='Spiral Path'</ref>."
 [/topic]
 
-[topic]
-    id=dominant
-    title= _ "Dominant"
-    text= _ "The <ref>dst='aspirant' text='Aspirant'</ref> that emerges as the drake leader, the only drake in the tribe that is allowed to reproduce with the <ref>dst='breeder' text='breeders'</ref>. Rarely, he may confer breeding privileges on others."
-[/topic]
-
 [topic]
     id=vulcaniad
     title= _ "Vulcaniad"
@@ -74,36 +56,12 @@
     text= _ "A Recorder is a Drakish scrollkeeper who has mastered the drakish <ref>dst='drakish_script' text='script'</ref>. The recorders are the only <ref>dst='caste' text='caste'</ref> of Drake not determined by biology: they recruit their members from all of the other castes."
 [/topic]
 
-[topic]
-    id=laying
-    title= _ "Laying"
-    text= _ "A portion of the <ref>dst='breeding_cycle' text='breeding cycle'</ref>."
-[/topic]
-
-[topic]
-    id=hatching
-    title= _ "Hatching"
-    text= _ "A portion of the <ref>dst='breeding_cycle' text='breeding cycle'</ref>."
-[/topic]
-
 [topic]
     id=hatchling
     title= _ "Hatchling"
     text= _ "A young drake that has not yet seen another generation hatch. The younger of the current generation of hatchlings are the most aggressive is the behavior of the <ref>dst='flight' text='flight'</ref>."
 [/topic]
 
-[topic]
-    id=fledgling
-    title= _ "Fledgling"
-    text= _ "A young drake that has seen another generation hatch. If the <ref>dst='flight' text='flight'</ref> can afford the loss of a generation they start the <ref>dst='swarming' text='Swarming'</ref>."
-[/topic]
-
-[topic]
-    id=breeder
-    title= _ "Breeder"
-    text= _ "The female drake. They are rare since <ref>dst='egg' text='eggs'</ref> that become breeders have to be handled with extra care. The number of breeders is also limited by the amounts of non-breeders around, since breeders can't take care of their food for themselves when laying. Drake breeders become fertile after the next <ref>dst='hatching' text='hatching'</ref>."
-[/topic]
-
 [topic]
     id=egg
     title= _ "Egg, Drake"
@@ -113,13 +71,7 @@
 [topic]
     id=flight
     title= _ "Flight"
-    text= _  "Tribe of Drakes, lives in an <ref>dst='aerie' text='Aerie'</ref>, controlling a hunting range. Each tribe has one <ref>dst='dominant' text='Dominant'</ref>, who confers mating privileges."
-[/topic]
-
-[topic]
-    id=aspirant
-    title= _ "Aspirant"
-    text= _ "Male drake that has passed through a hormonal metamorphosis that makes him able to mate with the <ref>dst='breeder' text='breeders'</ref>. The secretion of the hormone is caused by hunt and combat actions in which the drake is involved."
+    text= _  "Tribe of Drakes, lives in an <ref>dst='aerie' text='Aerie'</ref>, controlling a hunting range."
 [/topic]
 
 [topic]
@@ -128,24 +80,6 @@
     text= _ "The drake name for a true <ref>dst='unit_Fire Dragon' text='dragon'</ref>."
 [/topic]
 
-[topic]
-    id=intendant
-    title= _ "Intendant"
-    text= _  "One of the <ref>dst='aspirant' text='Aspirant'</ref> lieutenants of a <ref>dst='dominant' text='Dominant'</ref>. Traditionally he has one of each <ref>dst=caste text='caste'</ref> other than his own. Additional 'Intendants' are sometimes designated for special duties. Intendants are likeliest to be granted mating privileges, especially after a notable service."
-[/topic]
-
-[topic]
-    id=swarm
-    title= _ "Swarm"
-    text= _ "The <ref>dst='swarmlings' text='Swarmlings'</ref> that have left the <ref>dst='aerie' text='aerie'</ref> to found a new one."
-[/topic]
-
-[topic]
-    id=swarming
-    title= _ "Swarming"
-    text= _ " The <ref>dst='flight' text='flight'</ref> for a new drake <ref>dst='aerie' text='aerie'</ref> that recurs every <ref>dst='breeding_cycle' text='breeding cycle'</ref>. See <ref>dst='swarm' text='Swarm'</ref>"
-[/topic]
-
 [topic]
     id=runners
     title= _ "Runners"
@@ -158,12 +92,6 @@
     text= _ "Volcanic mountain on the central island of the archipelago <ref>dst='morogor' text='Morogor'</ref>."
 [/topic]
 
-[topic]
-    id=long_count
-    title= _ "Long Count"
-    text= _ "The drake calender based on <ref>dst='vulcaniad' text='Vulcaniad'</ref> and <ref>dst=breeding_cycle text='Breeding cycles'</ref>."
-[/topic]
-
 [topic]
     id=long_pig
     title= _ "Long Pig"