BIRD POPULATIONS - Birdpop.org

NORTH AMERICAN BREEDING BIRD SURVEY 2003-2008APPENDIX 1.. Long-term (1966-2008) trends, 6-yr (2003-2008) trends, and 2-yr (2007-2008) trends for all speciesdetected on BBS routes, 1966-2008. For the three intervals, we present trend (average % change/y) and 95%credible (Bayesian confidence) intervals. Trend is considered significant (P < 0.05) if the credible interval does notinclude zero (indicated by *). For the long-term trends, sample size (N of routes) and TQ-values are also provided.Species names based on AOU (1998).1966-2008––––––––––––––––––––––––––––––2003-2008––––––––––—–––––2007-2008––––––––––—–––––Credible Credible CredibleSpecies TQ N Trend Interval Trend Interval Trend IntervalBlack-bellied Whistling-Duck 2 101 7.9 * 3.7, 11.6 15.9 * 5.0, 27.6 80.7 * 24.8, 187.4Fulvous Whistling-Duck 2 43 2.6 -2.1, 7.1 12.2 * 1.3, 29.2 24.0 -26.0, 158.5Canada Goose 2 2585 11.8 * 9.3, 16.5 14.4 * 7.3, 24.1 16.9 -11.0, 77.0Mute Swan 3 93 4.1 -0.8, 10.1 5.2 -13.4, 40.5 8.9 -62.3, 346.0Wood Duck 2 2117 2.8 -0.1, 3.6 5.0 * 2.0, 8.8 5.4 -7.8, 26.3Gadwall 1 703 2.6 * 1.5, 3.5 5.3 * 0.5, 10.6 2.4 -19.5, 27.4American Wigeon 1 547 -3.5 * -5.4, -2.3 -1.6 -5.8, 2.9 -19.2 -38.4, 1.5American Black Duck 2 548 0.3 -2.3, 3.2 1.0 -4.9, 7.9 2.2 -25.8, 39.4Mallard 1 3146 -0.1 -0.9, 0.6 1.4 -1.3, 4.2 2.0 -10.7, 15.8Mottled Duck 1 107 -3.3 * -5.2, -1.3 -1.5 -8.0, 4.6 0.8 -29.0, 33.0Blue-winged Teal 3 1211 -0.3 -20.7, 1.0 6.0 -0.1, 13.2 -13.3 -35.1, 16.3Cinnamon Teal 3 465 -2.3 * -21.5, -0.5 0.1 -8.2, 8.5 -14.7 -55.7, 23.5Northern Shoveler 1 640 1.2 -0.9, 2.5 6.4 -0.3, 13.8 -18.0 -43.0, 14.8Northern Pintail 1 719 -3.5 * -6.3, -1.1 -2.3 -11.1, 12.2 -35.1 -61.0, 28.2Green-winged Teal 2 759 -0.4 -2.3, 1.1 2.9 -3.4, 13.3 9.0 -25.5, 73.6Canvasback 3 280 -1.2 -12.4, 1.4 0.9 -8.5, 14.2 -11.4 -53.5, 66.3Redhead 2 417 -0.4 -4.4, 1.7 2.2 -6.2, 13.0 -12.6 -47.5, 34.0Ring-necked Duck 3 445 3.6 -1.9, 8.9 9.3 * 2.5, 18.9 0.3 -54.8, 42.8Lesser Scaup 2 470 -3.0 * -8.0, -1.0 1.4 -7.6, 10.5 -4.9 -38.3, 54.2Bufflehead 2 225 2.6 -0.5, 4.5 5.0 * 0.2, 11.3 6.8 -16.2, 41.5Common Goldeneye 3 303 1.1 -10.1, 4.5 6.6 * 0.1, 16.3 17.2 -16.1, 78.9Barrow's Goldeneye 2 95 -1.6 -4.7, 0.7 -0.1 -7.5, 9.7 -3.5 -41.4, 37.2Hooded Merganser 3 376 5.2 * 0.5, 8.5 6.6 -3.2, 13.6 5.3 -32.4, 43.0Common Merganser 3 821 -1.0 -10.1, 1.1 2.0 -1.3, 7.1 3.1 -12.3, 31.5Red-breasted Merganser 3 75 -6.3 -27.7, 2.6 3.4 -19.2, 46.3 3.5 -83.0, 448.4Ruddy Duck 2 429 0.5 -3.0, 3.4 3.0 -6.9, 24.2 -1.9 -41.6, 141.3Chukar 2 163 0.2 -2.8, 2.4 0.5 -11.1, 11.0 -20.2 -58.3, 24.9Gray Partridge 2 434 -0.6 -2.5, 0.6 -0.2 -7.1, 6.2 -11.5 -48.3, 20.4Ring-necked Pheasant 1 1807 -0.2 -0.7, 0.3 1.9 -0.3, 4.2 5.9 -4.3, 16.9Ruffed Grouse 2 1166 1.0 -0.7, 2.4 5.1 -0.2, 11.3 5.2 -21.2, 38.6Sage Grouse 2 149 -3.9 * -7.7, -1.0 -0.3 -10.1, 12.4 -10.4 -57.0, 58.1Blue Grouse 2 230 -1.2 -2.6, 0.3 0.3 -3.6, 7.6 -1.1 -18.8, 31.5Sharp-tailed Grouse 2 292 -0.1 -2.5, 1.5 4.8 -1.6, 12.9 9.1 -56.9, 60.6Greater Prairie-Chicken 3 95 4.3 -1.0, 9.1 19.8 * 4.3, 56.0 41.6 -24.2, 393.6Wild Turkey 2 1963 9.1 * 7.6, 10.1 13.9 * 10.1, 17.6 19.6 * 4.0, 39.0Mountain Quail 1 180 -0.3 -2.1, 1.1 -8.3 * -13.7, -3.1 5.7 -17.2, 35.0Scaled Quail 1 206 -2.0 * -3.3, -0.9 -5.9 * -10.9, -0.7 -35.2 * -50.4, -15.7California Quail 1 418 1.2 * 0.3, 2.0 -2.2 -5.3, 1.0 7.4 -7.4, 24.5Gambel's Quail 3 143 0.0 -11.9, 1.6 -0.1 -4.9, 5.1 -9.0 -29.6, 18.3Northern Bobwhite 1 1912 -3.7 * -4.0, -3.5 -5.5 * -6.7, -4.3 -7.3 * -12.7, -1.4Common Loon 1 781 0.8 -0.6, 2.0 1.6 -0.3, 3.4 2.0 -6.1, 11.2Pied-billed Grebe 2 1025 -0.3 -3.3, 1.4 8.9 * 0.3, 18.8 -12.5 -42.6, 30.3Horned Grebe 2 172 -2.5 * -4.4, -0.8 -1.7 -10.1, 7.1 -14.9 -50.6, 24.5Red-necked Grebe 2 182 0.4 -1.0, 2.1 1.7 -2.1, 8.3 0.1 -22.2, 28.5[101]