The following calls are some of the best matches for warbler species as portrayed on the Evans/O'Brien Flight Calls of Migratory Birds, I have recorded over my house at night.  Please note that these calls should be considered presumptions.

Northern Parula

Chestnut-sided Warbler

Cape May Warbler

Black-throated Blue Warbler

American Redstart

Ovenbird

Common Yellowthroat

Canada Warbler