The Derelth are known for their associations with certain types of bird - they have domesticated certain birds of prey as pets (Forktailed Falcons - treat as normal hawks), and use large flightless birds called Axebeaks as steeds, even riding them into battle.
The Derelth have an alliance with an eyrie of giant eagles - in emergencies the eagles can provide travel by air for a select few elves, and can also scout and harry weak foes.
The Derelth no longer have permanent settlements - they set up camp for a couple of weeks or so then move on.
Back in the past they were great builders and architects - their ruined towns are dotted around the Talloak Forest. These are abandoned by the elves now, but other races have taken over the ruins.
Like other elves, the champions of the Derelth are a mixture of rangers and spellswords.
Derleth Elves hold both Telemacon and Eldara as their favourite deities.
Adapted from AD&D/OSRIC, here are the Axebeak and the Giant Eagle for Labyrinth Lord
Name Axebeak Giant Eagle
No. Enc. 1d10 1d4
Alignment Unaligned Neutral
Movement 240' 60'/fly 360'
Armour Class 6 6
Hit Dice 3 (14 hp) 4 (18 hp)
Attacks 2 claws/1 bite 2 claws/1 bite
THAC0 17 16
Damage 1d3/1d3/2d4 1d4/1d4/2d6
Save As F2 F4
Hoard Class nil nil
Size Large (8' tall) Large (7' tall, 15' span)
Type Animal Magical Beast
Intelligence 1-2 (animal) 12-13 (very)XP Value 50 80
Axebeaks are flightless predatory birds that run around on two tall legs, with long necks, heavy beaks and short stubby wings that are only used for display and balance. They may be related to either the ostriches or the dreaded Diatrymas from the southern continents. Axebeaks prefer plains but are sometimes found in forests and hills where there is food.
When wild, Axebeaks will attack and eat small animals including domestic pets, livestock, children and halflings. If hungry or in a large pack they may be brave enough to attack adult humans, horses or cattle.
Occasionally intelligent humanoids such as the Derelth elves will domesticate axebeaks as mounts. As such they can carry 200lb at full speed, up to 300lb at 150' or a maximum 400lb at 90'. They can be trained to attack in a similar way to a warhorse, and can also charge when the rider wields a lance.
Giant eagles are magnificent creatures that are more than mere animals. They are at least as intelligent as most people, and certainly wiser and more aloof. They sometimes assist elves, mages or neutral clerics who show them the appropriate respect. In battle a giant eagle rarely lands, prefering to swoop onto prey (treat as charge: +2 to hit and double claw damage) . If both claws hit and the target is man-sized or smaller, the eagle can snatch the opponent into the air and drop them from a height (1d6+1 x10 ft drop, doing 1d6 damage per 10'). Giant eagles live on great mountain tops or in the heart of primal forests.