Any advice on a full name for the nickname [name_u]Levi[/name_u] for a girl?
Big sisters are [name_u]Romy[/name_u] [name_u]Wren[/name_u], [name_u]Bennet[/name_u] [name_f]Lucille[/name_f], and [name_u]Ellery[/name_u] [name_u]Sage[/name_u].
Hoping for a name that starts with L, and a middle name that means hawk or bird (not shae)
Lavinia
Liviana
More of a stretch and they don’t start with L but Olivia, Evalina, Valentine/Valentina could also work
Meaning hawk I found Iolana, Gavina, Liluye, Nele, and Soko
Meaning Eagle: Aquilina, Arnelle, Arnia, Lazalea, Peta.
[name_f]Eveline[/name_f]
[name_m]Leverett[/name_m]
[name_f]Lavena[/name_f]
[name_f]Laverne[/name_f]
[name_f]Olive[/name_f]
[name_f]Lovelyn[/name_f]
Lovelle
[name_f]Lillevi[/name_f]
[name_f]Liviana[/name_f]
[name_f]Leverne[/name_f]
[name_f]Levis[/name_f]
[name_u]Leva[/name_u]
[name_f]Liva[/name_f]
[name_f]Lively[/name_f]
[name_f]Cleva[/name_f]
[name_m]Kaleva[/name_m]
[name_u]Eleven[/name_u]
[name_m]Kalevi[/name_m]
[name_f]Mileva[/name_f]
[name_f]Olivine[/name_f]
[name_m]Even[/name_m] though I know this isnt exactly what your looking for you could also consider a lee/vi first and middle combo like [name_f]Liesl[/name_f] [name_f]Viola[/name_f] or [name_f]Leah[/name_f] [name_f]Violet[/name_f], or maybe even [name_f]Leah[/name_f] [name_f]Mavis[/name_f]
As for ‘birdy’ middles Id suggest
[name_f]Aderyn[/name_f]
[name_f]Alouette[/name_f]
[name_u]Astor[/name_u] (means hawk)
[name_f]Avelot[/name_f]
[name_f]Ava[/name_f]
[name_f]Avis[/name_f]
[name_f]Birdie[/name_f]
[name_f]Deryn[/name_f]
[name_u]Lark[/name_u]
[name_f]Mavis[/name_f]
[name_u]Vega[/name_u]
[name_f]Lavinia[/name_f] is actually is a family name on husband’s side, he loves it! It’s not my thing but we would call her [name_u]Levi[/name_u]. Thoughts on [name_f]Lavinia[/name_f] [name_f]Birdie[/name_f]?
[name_f]Lavinia[/name_f] [name_f]Birdie[/name_f] nn [name_u]Levi[/name_u] is adorable! If that works for both you and your husband go for it. But if you truly don’t like Lavinia… you might want to try another name. Sure you’ll call her [name_u]Levi[/name_u], but you will still hear the full name often.
What about just [name_u]Levi[/name_u]? It works super well as a stand alone name. You have a unique sister name in [name_u]Bennet[/name_u], so [name_u]Levi[/name_u] could work with the older sisters well.
I agree with @LibbyLou72 i think [name_u]Levi[/name_u] works really well on her own!!
Agree with @Eirime 's suggestion of [name_f]Lavinia[/name_f] - that was my first thought for a full name of [name_u]Levi[/name_u] for a girl. Good luck on finding the name!
[name_f]Olivia[/name_f] too could work at a stretch.
Congratulations! 
Loveee Lavinia! 
But if it’s not really your thing, I say skip it. Levi is super nice on it’s own and it would go better with her sisters names anyway. 
I’d love
Lavinia Circe
Levi Starling / Lavinia Starling
Lavinia Dove
Levi Lark / Lavinia Lark
Lavinia Raven
Levi Phoenix
Not a big Birdie fan. I would just really hate my male boss call me Birdie…
[name_u]Love[/name_u] your naming style. I would just use [name_u]Levi[/name_u] and a feminine middle name.Example
[name_u]Levi[/name_u] [name_f]Agatha[/name_f]
[name_u]Levi[/name_u] [name_f]Kate[/name_f]
[name_u]Levi[/name_u] [name_f]Kathleen[/name_f]
[name_u]Levi[/name_u] [name_u]Louise[/name_u]
[name_u]Levi[/name_u] [name_f]Naomi[/name_f]
[name_u]Levi[/name_u] [name_f]Poppy[/name_f]
[name_u]Levi[/name_u] [name_f]Rosemary[/name_f]
Other suggestions to get to [name_u]Levi[/name_u]
[name_u]Leigh[/name_u] [name_f]Veronica[/name_f]
[name_f]Leni[/name_f] [name_f]Victoria[/name_f]
@Parfait_de_Roses agree with the boss thing but as a middle I think it’s fine