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Predictor Acronyms
The following are the predictors used in the RandomForest model.   Context-Sensitive Help    
Climate
Tmaysep: Mean May-September temperature (C)
Tjul: Mean July temperature (C)
Tjan: Mean January temperature (C)
Tavg: Mean annual temperature (C)
Pptmaysep: Mean May-September precipitation (mm)
Ppt: Annual precipitation (mm))
Juljandiff: Mean difference between July and January Temperature (C)
Elevation
Elv_rang: Range of elevation (m)
Elv_min: Minimum elevation (m)
Elv_mean: Average elevation (m)
Elv_max: Maximum elevation (m)
Bird Species IV
IV12: balsam fir (Abies balsamea)
IV68: eastern redcedar (Juniperus virginiana)
IV71: tamarack (native) (Larix laricina)
IV94: white spruce (Picea glauca)
IV95: black spruce (Picea mariana)
IV97: red spruce (Picea rubens)
IV105: jack pine (Pinus banksiana)
IV107: sand pine (Pinus clausa)
IV110: shortleaf pine (Pinus echinata)
IV111: slash pine (Pinus elliottii)
IV115: spruce pine (Pinus glabra)
IV121: longleaf pine (Pinus palustris)
IV123: Table Mountain (pine Pinus pungens)
IV125: red pine (Pinus resinosa)
IV126: pitch pine (Pinus rigida)
IV128: pond pine (Pinus serotina)
IV129: eastern whitepine (Pinus strobus)
IV131: loblolly pine (Pinus taeda)
IV132: Virginia pine (Pinus virginiana)
IV221: baldcypress (Taxodium distichum)
IV222: pondcypress (Taxodium distichum var. nutans)
IV241: northern white-cedar (Thuja occidentalis)
IV261: eastern hemlock (Tsuga canadensis)
IV315: striped maple (Acer pensylvanicum)
IV316: red maple (Acer rubrum)
IV318: sugar maple (Acer saccharum)
IV319: mountain maple (Acer spicatum)
IV332: yellow buckeye (Aesculus octandra)
IV355: European alder (Alnus glutinosa)
IV371: yellow birch (Betula alleghaniensis)
IV372: sweet birch (Betula lenta)
IV375: paper birch (Betula papyrifera)
IV379: gray birch (Betula populifolla)
IV391: American hornbeam: musclewood (Carpinus caroliniana)
IV401: water hickory (Carya aquatica)
IV403: pignut hickory (Carya glabra)
IV407: shagbark hickory (Carya ovata)
IV408: black hickory (Carya texana)
IV409: mockernut hickory (Carya tomentosa)
IV421: American chestnut (Castanea dentata)
IV461: sugarberry (Celtis laevigata)
IV462: hackberry (Celtis occidentalis)
IV491: flowering dogwood (Cornus florida)
IV531: American beech (Fagus grandifolia)
IV541: white ash (Fraxinus americana)
IV543: black ash (Fraxinus nigra)
IV555: loblolly-bay (Gordonia lasianthus)
IV580: silverbell (Halesia spp.)
IV591: American holly (Ilex opaca)
IV611: sweetgum (Liquidambar styraciflua)
IV621: yellow-poplar (Liriodendron tuliperfia)
IV641: osage-orange (Maclura pomifera)
IV651: cucumberbird (Magnolia acuminata)
IV653: sweetbay (Magnolia virginiana)
IV692: Ogechee tupelo (Nyssa ogechee)
IV693: blackgum (Nyssa sylvatica)
IV694: swamp tupelo (Nyssa sylvatica var. biflora)
IV711: sourwood (Oxydendrum arboreum)
IV721: redbay (Persea borbonia)
IV741: balsam poplar (Populus balsamifera)
IV743: bigtooth aspen (Populus grandidentata)
IV746: quaking aspen (Populus tremuloide)
IV762: black cherry (Prunus serotina)
IV802: white oak (Quercus alba)
IV806: scarlet oak (Quercus coccinea)
IV809: northern pinoak (Quercus ellipsoidalis)
IV812: southern redoak (Quercus falcata var.falcata)
IV813: cherrybark oak (Quercus falcata var.pagodifolia)
IV817: shingle oak (Quercus imbricaria)
IV819: turkey oak (Quercus laevis)
IV820: laurel oak (Quercus laurifolia)
IV822: overcup oak (Quercus lyrata)
IV824: blackjack oak (Quercus marilandica)
IV825: swamp chestnutoak (Quercus michauxii)
IV826: chinkapin oak (Quercus muehlenbergii)
IV827: water oak (Quercus nigra)
IV831: willow oak (Quercus phellos)
IV832: chestnut oak (Quercus prinus)
IV833: northern redoak (Quercus rubra)
IV835: post oak (Quercus stellata)
IV837: black oak (Quercus velutina)
IV838: live oak (Quercus virginiana)
IV840: dwarf postoak (Quercus stellata var margaretta)
IV931: sassafras (Sassafras albidum)
IV951: American basswood (Tilia americana)
IV952: white basswood (Tilia heterophylla)
IV971: winged elm (Ulmus alata)
IV972: American elm (Ulmus americana)