Dwarf Fortress Bug Tracker - Dwarf Fortress
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0007206Dwarf FortressAdventure Mode -- Travelpublic2014-07-13 07:122014-08-28 13:14
Toady One 
normalminorhave not tried
0007206: Hordes of creatures accumulating near empty lair with each fast travel
I killed a Night Troll near its lair in evil forest and fast traveled to heal. I noticed that some undead animals spawned. I kept fast traveling and more animals spawned with each fast travel.
They seem only to spawn on the lair map tile - nearby fast-travelable tiles are empty while lair tiles have a huge density of creatures.

http://dffd.wimbli.com/file.php?id=8933 [^]
respawns, Travel, Traveling
related to 0007154resolved Toady One Maxed-out animal populations cause lag in dwarf/goblin sites 
related to 0002529resolved Toady One Repeatedly visiting town/site causes animals to accumulate 
related to 0007216confirmed Footkerchief Underground creatures teleported to surface 
related to 0006220acknowledged Dwarfu Depopulation of underground animals when playing Adventure mode 
related to 0006623confirmed Footkerchief Game freezes after each move 
Issue History
2014-07-13 07:12Someone-elseNew Issue
2014-07-13 09:51FootkerchiefRelationship addedrelated to 0007154
2014-07-13 09:53FootkerchiefRelationship addedrelated to 0002529
2014-07-13 10:01TalvienoNote Added: 0026151
2014-07-13 10:24FootkerchiefRelationship addedrelated to 0007216
2014-07-13 10:26FootkerchiefRelationship addedrelated to 0006220
2014-07-13 11:18KennelTag Attached: respawns
2014-07-13 11:18KennelTag Attached: Travel
2014-07-13 11:18KennelTag Attached: Traveling
2014-07-16 11:31XXSockXXNote Added: 0026652
2014-07-21 22:01FootkerchiefRelationship addedrelated to 0006623
2014-08-28 13:14Toady OneNote Added: 0029753
2014-08-28 13:14Toady OneStatusnew => resolved
2014-08-28 13:14Toady OneFixed in Version => Next Version
2014-08-28 13:14Toady OneResolutionopen => fixed
2014-08-28 13:14Toady OneAssigned To => Toady One

2014-07-13 10:01   
Related to 0007216.
2014-07-16 11:31   
In 34.07 I had a huge number of surface creatures accumulating on a retired fortress once. I had marked the site as a lair with DFHack before abandoning and then used it as a base for my adventurer. With every visit more wildlife spawned, bringing game speed to a crawl. In other abandoned forts that were not marked as lair this never happened.
So maybe this is a variety of an old bug?
Toady One   
2014-08-28 13:14   
Looks like another form of population duplication, could be pretty old. It is fixed now for 0.40.11, though the old duplicate populations aren't removed.