A description of each variable can be found in the BBIRD protocol

CompNID
NID
Nst_ID
Species
Plot
Site
State
Yr
Trtmt
Obs
Nsttype
Attempt
Ntries
Cs
Nfcs
Nfldg
Exnfldg
Elusive
Init
PreInit
Incdate
Htchdate
Fldgdate
Faildate
NSuccegg
NSucinc
NSucnstl
NFinalsuc
Nobegg
Nobinc
Nobnstl
Nobtot
Preclay
Preinc
Prenestl
Cegglay
Preceggl
Cegghtch
Preceggh
Cfldg
Precfldg
Cobs
CNfate
Cfatetim
Ceggdate
Preceggd