That's the exact same route that I take my kids to ride our bicycles, from UCI to the bridge in Jamboree, once that we go under the bridge and enter Back Bay (yes, nice surprise) we stop and watch all kind of birds living there, very entertaining. I "discovered" this specific segment using Google maps, backtracing from the birds watching spot.
The only "logistics" problem that I have is after I park my minivan in the UCI parking structure and before I arrive to the bike path, my wife and myself need to find a way to pull up my kids and their bycicles and cross the street. I haven't found parking close to the bike route and at the same not that far away from the birds, 1 mile max.
from: University Dr & Mesa Rd, Irvine,CA
to: University Dr S & Jamboree, Irvine,CA