i was thinking more about my bird thing and I kinda wanna make it a species

so here's what I got as far as a few blurbs about em, info is subject to change
I guess im gonna call them 'Keepers' or in whatever case they happen to be, the one i have posted one would be a 'Hope Keeper' because of the runes engraved on it's hourglass which is their torso the have a skeletal lower body with bird talons and the bones are made of a weird onyx crystalline matter.

Basically, the hope keeper can choose to feed on hope or feed on fear and release hope. This lady choose originally to feed off the fear of the world until it consumed her and with that she thought if she consumed hope she would regain her purity. It however turned her into a monster.

The hourglass functions as storage for energy- if too much is consumed the hourglass shatters and they die, to little and the turn to brittle and eventually crumble away. The mating process can take place between any gender[they usually choose their own or go with gender-less] they exchange energies, mostly when they are near death since this takes a toll on them, until each of the top parts of their hourglasses are full. It'll take until the bottom part is full for the new keeper to form and break the glass killing the parent. If the new keeper cannot break the glass it will be consumed which isn't too rare for this species.

These keepers can range from all types of birds and styles alive or dead, they all have the same crystalline bones but colors can vary the hourglass body is also important. Each one has a runic inscription of what type of keeper they are here's the runic alphabet i use for said runes but feel free to use any other runic alphabet
http://www.spelwerx.com/image/runic.jpg

if you're interested in making one please lemme know i'd love to hear your ideas!! and if you wanna add some things into their info please feel free ov o!! i really love birds please help me make this species blossom