The time of day is the prefix and the number of siblings is the suffix.
Time of Day:
Dawn: Dawn
Morning: Bright
Noon: Mouse
Afternoon: Fern
Evening: Dark
Midnight: Moon
Twilight: Gray
Number of Siblings:
0: wing
1: feather
2: stripe
3: pelt
4: fur
5: heart
6+: song
I hope you liked it! Comment the names that you get! ;)