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TPWD Quail Roadside Survey Historical Data
1978 to 2019


Perspective

Statewide surveys were initiated in 1978 to monitor quail populations. This index uses randomly selected, 20-mile roadside survey lines to determine annual quail population trends by ecological region. This long-term data incorporates decades of changes along each of the 165 existing roadside routes in Texas. The mean number of quail observed per route is recorded each year by region. The long term mean for each region is included at the bottom of the table.

Bobwhite Quail

Number of Bobwhite Quail per Year
Year Cross Timbers Bobwhite Edwards Plateau Bobwhite Gulf Prairies Bobwhite High Plains Bobwhite Rolling Plains Bobwhite South Texas Plains Bobwhite
1978 16.72 6.92 15.83 3.64 19.36 14.69
1979 20.63 12.70 19.50 0.36 19.00 47.00
1980 24.56 8.15 13.17 0.73 21.93 16.50
1981 25.28 15.04 13.25 1.36 34.72 26.38
1982 24.28 15.78 12.00 0.73 32.63 39.17
1983 33.16 5.93 12.00 0.90 30.32 13.97
1984 15.03 4.3 14.92 0.73 8.32 12.00
1985 11.26 3.74 8.58 9.45 15.98 18.62
1986 17.35 4.00 15.17 3.00 34.44 32.52
1987 38.26 8.26 11.17 4.73 49.25 48.07
1988 15.85 6.27 17.89 no data 23.10 19.57
1989 13.11 4.00 8.89 no data 13.65 11.41
1990 11.87 4.53 9.25 no data 13.35 12.03
1991 19.58 11.63 18.88 no data 23.20 24.81
1992 18 10.63 13.13 no data 40.00 52.48
1993 26.89 14.88 9.00 5.43 41.02 33.74
1994 11.49 6.13 11.14 4.63 15.35 14.68
1995 10.26 3.00 8.71 0.88 12.33 10.74
1996 6.03 4.44 9.57 1.22 8.07 7.42
1997 10.06 8.19 4.33 3.00 24.86 12.44
1998 8.34 5.13 11.00 2.22 18.74 18.58
1999 9.60 5.06 12.89 4.33 11.66 22.65
2000 2.91 1.25 4.89 6.44 16.66 10.77
2001 5.63 4.19 5.22 1.67 12.07 15.26
2002 7.83 0.31 6.78 0.56 15.86 6.68
2003 6.71 8.63 7.11 8.33 24.11 11.35
2004 2.65 7.13 7.75 2.56 23.20 19.29
2005 3.97 3.50 3.56 16.67 37.37 8.87
2006 2.57 0.87 4.00 5.71 13.98 3.10
2007 2.74 1.07 3.56 6.22 21.05 7.03
2008 3.32 0.57 9.67 1.63 18.53 6.58
2009 1.11 0.75 5.67 3.44 6.64 4.87
2010 0.74 1.94 4.56 2.43 8.02 8.42
2011 2.06 1.06 19.44 1.78 5.32 8.03
2012 0.23 5.13 8.00 0.11 3.48 7.74
2013 0.60 1.13 10.78 0.78 2.80 6.13
2014 1.34 4.81 19.90 5.89 7.52 13.77
2015 1.06 6.44 14.90 15.00 38.84 24.55
2016 6.14 11.67 4.60 33.22 52.52 13.97
2017 4.03 4.17 7.30 9.22 23.16 10.16
2018 0.17 0.83 1.30 9.22 3.66 5.06
2019 0.40 0.94 2.33 4.11 5.34 13.77
Long Term Mean 10.57 5.60 10.04 4.93 20.27 17.06

Scaled Quail Table

Number of Scaled Quail per Year
Year Edwards Plateau Scaled High Plains Scaled Rolling Plains Scaled South Texas Plains Scaled Trans-Pecos Scaled
1978 4.88 2.06 13.09 4.00 20.37
1979 10.75 5.24 9.16 13.72 51.37
1980 2.50 1.33 2.73 5.17 11.28
1981 7.25 4.17 9.44 6.00 44.47
1982 11.00 4.75 19.50 7.50 27.28
1983 13.38 0.55 5.06 6.44 15.74
1984 5.50 1.33 7.09 1.61 12.05
1985 19.75 2.58 6.22 7.83 25.42
1986 13.00 2.25 7.26 11.06 19.74
1987 11.25 1.25 7.55 22.06 27.89
1988 12.50 no data 3.04 2.00 13.13
1989 8.75 no data 2.50 1.20 7.63
1990 2.00 no data 0.87 4.33 3.19
1991 8.25 no data 0.88 16.56 7.24
1992 2.88 no data 2.64 19.95 27.50
1993 3.75 0.00 0.39 14.70 8.89
1994 0.75 0.00 0.00 7.00 4.06
1995 0.00 6.50 0.44 5.25 3.94
1996 0.00 2.09 0.88 2.00 5.56
1997 1.25 1.36 0.06 3.35 14.59
1998 5.88 0.27 0.31 13.90 9.06
1999 3.88 1.18 1.21 18.10 20.76
2000 1.88 1.27 0.30 10.60 13.47
2001 1.13 0.36 2.91 32.45 17.67
2002 9.63 0.09 3.15 3.95 10.24
2003 12.88 5.09 2.64 7.20 14.05
2004 8.25 0.00 1.24 3.05 25.41
2005 24.38 1.91 3.78 1.55 34.18
2006 14.43 6.29 3.70 0.80 18.93
2007 6.38 0.64 1.48 0.10 28.00
2008 5.83 0.00 0.41 1.10 6.53
2009 0.25 0.64 0.00 0.25 15.81
2010 2.88 0.00 0.82 0.90 6.56
2011 1.25 1.09 0.00 1.15 6.31
2012 5.63 0.82 0.09 1.45 7.38
2013 0.25 0.27 0.06 1.40 9.13
2014 2.25 0.09 0.55 1.15 7.13
2015 5.13 18.00 3.18 1.30 53.79
2016 18.38 8.64 4.18 2.55 46.80
2017 24.75 6.82 3.58 1.65 16.60
2018 3.50 1.36 0.21 0.10 10.93
2019 1.50 2.73 0.27 0.63 25.47
Long-Term Mean 7.13 2.51 3.16 6.40 18.07