Table 1. Change in number of territories from 1979 + 1980 to 1982 + 1983, and results of Wilcoxon signed-ranks test for paired data for the 30 most common species in the study plots. P-values less than 0.05 are highlighted in gray along with their associated species. For n > 25 or when there are ties, the normal approximation (z) of the test statistic is provided, otherwise the Wilcoxon signed-ranks test statistic V is provided. RUGR = Ruffled Grouse (Bonasa umbellus), YBFL = Yellow-bellied Flycatcher (Empidonax flaviventris), ALFL = Alder Flycatcher (Empidonax alnorum), LEFL = Least Flycatcher (Empidonax minimus), REVI = Red-eyed Vireo (Vireo olivaceus), PHVI = Philadephia Vireo (Vireo philadelphicus), BCCH = Black-capped Chickadee (Poecile hudsonia), WIWR = Winter Wren (Troglodytes troglodytes), GCKI = Golden-crowned Kinglet (Regulus satrapa), VEER = Veery (Catharus fuscenscens), SWTH = Swainson's Thrush (Catharus ustulatus), HETH = Hermit Thrush (Catharus guttatus), TEWA = Tennessee Warbler (Vermivora peregrina), NAWA = Nashville Warbler (Vermivora ruficapilla), CSWA = Chestnut-sided Warbler (Dendroica pensylvanica), MAWA = Magnolia Warbler (Dendroica magnolia), CMWA = Cape May Warbler (Dendroica tigrina), YRWA = Yellow-rumped Warbler (Dendroica coronata), BTNW = Black-throated Green Warbler (Dendroica virens), BLBW = Blackburnian Warbler (Dendroica fusca), BBWA = Bay-breasted Warbler (Dendroica castanea), BAWW = Black-and-white Warbler (Mniotilta varia), AMRE = American Redstart (Setophaga ruticilla), OVEN = Ovenbird (Seiurus aurocapilla), MOWA = Mourning Warbler (Oporonis philadelphia), CAWA = Canada Warbler (Wilsonia canadensis), LISP = Lincoln's Sparrow (Melospiza lincolnii), WTSP = White-throated Sparrow (Zonotrichia albicollis), RBGR = Rose-breasted Grosbeak (Pheucticus ludovicianus), and PUFI = Purple Finch (Carpodacus purpureus).

Species
Plots of all ages
Youngs plots
Mature and
intermediate plots
Intermediate and
young plots
Change
z
p
Change
z (V)
p
Change
z (V)
p
Change
z (V)
p
RUGR
-3.95
0.52
0.6031
-6.35
1.8454
0.0650
2.4
-0.8422
0.3997
-1.65
0.3944
0.693
YBFL
-3.75
0.977
0.3286
-0.75
0.875
0.3816
-3
0.5671
0.5706
2.1
-0.1421
0.887
ALFL
18.7
-0.4173
0.6765
18.7
(10)
0.3125
0
NA
NA
18.7
-0.6024
0.547
LEFL
15.35
-0.738
0.4608
-3.05
0.2836
0.7768
18.4
-1.233
0.2175
15.15
-0.5512
0.582
REVI
22.1
-1.009
0.3131
13
(14)
0.6406
9.1
-0.773
0.4395
22.8
-1.2556
0.209
PHVI
13.15
-1.5476
0.1217
3
-1.5255
0.1271
10.15
-0.798
0.4249
11.15
-1.808
0.071
BCCH
12.75
-1.0973
0.2725
5.65
0.1418
0.8873
7.1
-1.6325
0.1026
10.85
-0.4363
0.663
WIWR
3.6
-0.3688
0.7123
-3.75
0.7019
0.4828
7.35
-1.1371
0.2555
-4.05
0.8434
0.399
GCKI
44.15
-2.308
0.021
4.1
-1.317
0.1878
40.05
-1.8248
0.0680
33.6
-2.1698
0.03
VEER
17.15
-2.1422
0.0322
7.35
-0.9855
0.3244
9.8
-1.8952
0.0581
17.15
-2.1285
0.033
SWTH
4.55
0.1306
0.8961
-2.55
0.8339
0.4043
7.1
(14)
0.6406
3.1
-0.2008
0.841
HETH
5.25
-1.2647
0.206
3.15
-1.1356
0.2561
2.1
-0.3627
0.7168
6
-1.3393
0.181
TEWA
219.35
-3.14
0.0017
102.95
-1.8843
0.0653
116.4
-2.3863
0.017
160.45
-2.4981
0.013
NAWA
8.2
-0.6476
0.5173
13.7
(6)
0.1094
-5.5
1.1342
0.2567
6.4
-0.3139
0.754
CSWA
23.15
-0.601
0.548
25.35
(13)
0.5469
-2.2
0.0758
0.9396
23.1
-0.5495
0.583
MAWA
21.55
-1.19
0.234
19.85
-1.6845
0.0921
1.7
(18)
1
23.45
-1.6486
0.099
CMWA
44.45
-2.9057
0.0037
7.8
-1.6385
0.1013
36.65
-2.2684
0.0233
11.7
-2.1698
0.03
YRWA
4.95
-0.1036
0.9175
6.05
-0.4253
0.6706
-1.1
(24)
0.4609
3.25
0.1575
0.875
BTNW
-1.25
-0.3496
0.7266
1
-0.875
0.3816
-2.25
0.0758
0.9396
0.1
0
1
BLBW
6.25
-1.0658
0.2865
0
NA
NA
6.25
-1.1371
0.2555
0
NA
NA
BBWA
162.1
-3.35
0.0008
23.85
-2.1039
0.0354
138.25
(0)
0.0078
75.6
-2.8153
0.005
BAWW
22.6
-2.9528
0.0031
14.75
-2.3863
0.017
7.85
-1.4037
0.1604
20.9
-2.7477
0.006
AMRE
33
-2.134
0.0328
20.05
-1.5595
0.1189
12.95
-1.1371
0.2555
33
-2.205
0.028
OVEN
27.55
-1.9066
0.0566
2.9
-0.8339
0.4043
24.65
(5)
0.0781
25
-2.1285
0.033
MOWA
-1.7
0.0261
0.9792
-2.25
(20)
0.8438
0.55
0
1
-1.7
(40)
0.97
CAWA
-5.65
0.5006
0.6166
-3.75
0.5811
0.5611
-1.9
0.1418
0.8873
-7.85
1.0446
0.296
LISP
0.05
0.66
0.5092
0.05
0.4253
0.6706
0
NA
NA
0.05
0.5921
0.554
WTSP
49.35
-2.28
0.0228
50.2
-2.4535
0.0141
-0.85
0.2807
0.7789
47.75
-2.2776
0.023
RBGR
2.85
-0.3448
0.7302
4.55
0
1
-1.7
0
1
1.95
0
1
PUFI
8.8
-2.0619
0.0392
4.2
-1.8667
0.0619
4.6
-0.798
0.4249
5.15
-1.822
0.685