What about Daphne? Some, besides the winter daphne, bloom in winter or early spring. It is bee friendly and the critters won't lunch on them. In your moose/rabbit situation it is hard to recommend many plants.
I was mindblown to see that some flowers are toxic to some bees!? Wouldn't the bees be able to sort that out and not use the ones that are bad for them?
There's a list toward the bottom of this page that lists a few of those harmful plants.
https://www.countryfile.com/wildlife...o-your-garden/
and another list on this page with proper names listed.
https://www.buzzaboutbees.net/Plants...-for-Bees.html
PS
Wallflowers are biennial. Start some now for next year.