Three-toed Woodpecker = -1
Ivory-billed Woodpecker = 0
| Eastern Meadowlark | = | Western Meadowlark |
(White Ibis + Scarlet Ibis) / 2 = Pink Ibis
Greater Yellowlegs = Lesser Yellowlegs + 4
Cooper's Hawk i > Sharp-shinned Hawk i for all i
| Western Screech-Owl | = | Eastern Screech-Owl | ± eps
min(Pinyon Jay,Juniper Titmouse,Mountain Bluebird) > 4000
Brewster's Warbler = (Blue-winged Warbler + Golden-winged Warbler) / 2
European Starling = #@%*!
(empidonax) i 
= - mpidonax for mdonax = 1/
