Hi,

I'm guessing you have Bradford Pear trees or some variety of Bradford (Cleveland Select, Stone Hill, Select, etc.)

The tree that has leafed out but not bloomed may be due to a few different factors: the tree damage was enough to shock it out of blooming this year, still settling in from planting last year, or a late frost may have killed off any early buds. Since it is leafing out, I'd let it go and see how it does over the summer as far as leaf production and stem growth. Worst case? You'll have to replace it later.

The tree that is still "dormant" may also still be in shock from transplanting and rabbit damage. It's likely that it will be somewhat stunted compared to the others, if it survives that is. If you want a "matched set" of trees I'd replace it now. If you don't mind having potentially "mis-matched" trees let it go and see how it does. Again, no harm in waiting since the worst case is replacement.

Just a few words about Bradford Pears, if they are BPs. They are very popular and for some time were considered the tree of choice by developers and towns for open planting. They are very pretty trees and fairly tolerant of many different soil and environmental conditions. However, the structure of the tree is such that as they age they become prone to wind, snow and ice damage. This is partly due to the angle of the branches off the trunk and how close together the branches grow off the trunk. It is very common to see 15-20 year old Bradfords with sections of branch missing due to storm damage. Because of these weaknesses, some here on GW absolutely HATE BPs. They'd tell you to rip out all three and get something else.

Hope that helped an good luck with your trees