Taxa |
Type1 |
Male Mean g (SD, N) |
Female Mean g (SD, N) |
Study Location |
Source |
Green-tailed Towhee |
3 |
29.0 (1.4, 17) |
29.4 (2.0, 18) |
Utah |
Birds of North America accounts (BNA) |
Rufous-crowned Sparrow |
3 |
19.3 (1.5, 59) |
18.3 (1.3, 39) |
Range-wide |
Dunning 2006 |
Field Sparrow |
3 |
13.2 (0.8, 23) |
13.0 (0.7, 17) |
New York |
BNA |
Vesper Sparrow |
3 |
26.5 ( na, 28) |
24.9 ( na, 15) |
Michigan |
BNA |
Lark Sparrow |
3 |
30.1 (na, 12) |
30.7 (na, 8) |
Kansas |
BNA |
Black-Throated Sparrow |
3 |
13.6 (0.9, 32) |
13.6 (1.4. 10) |
Arizona |
BNA |
Lark Bunting |
3 |
39.6 (na) |
36.4 (na) |
Saskatchewan |
BNA |
Savannah Sparrow (P. s. nevadensis) |
2 |
17.2 (0.9, 11) |
16.2 (1.1, 10) |
Nevada/California |
MVZ |
Savannah Sparrow (P. s. beldingi) |
1 |
19.1 (0.8, 8) |
17.0 (0.83, 6) |
Southern California |
Williams and Nagey 1985; Williams and Dwinnel 1990 |
Grasshopper Sparrow |
3 |
17.23 (24) |
17.57 (30) |
Maryland |
D. Gill (personal communication) |
Leconte’s Sparrow |
2 |
13.0 (1.0, 59) |
13.2 (1.4, 31) |
North Dakota |
BNA |
Nelson’s Sharp-tailed Sparrow (A. n. nelson) |
2 |
14.8 (0.8. 14) |
13.9 (1.0, 7) |
North Dakota |
BNA |
Nelson’s Sharp-tailed Sparrow (A.n. subvirgatus) |
1 |
18.0 (1.22, 80) |
17.7 (0.72, 35) |
Quebec |
BNA |
Saltmarsh Sharp-tailed Sparrow |
1 |
20.1 (1.0, 33) |
17.2 (1.5, 14) |
New York/New Jersey |
Dunning 2006 |
Seaside Sparrow |
1 |
24.3 (1.4, 33) |
22.2 (1.6, 14) |
New York |
BNA |
Fox Sparrow |
3 |
32.5 (3.7, 24) |
31.2 (5.6, 33) |
California |
MVZ |
Song Sparrow (M. m. melodia) |
2 |
20.5 (1.1, 50) |
19.5 (1.3) 120) |
Pennsylvania |
Dunning 2006 |
Song Sparrow (M. m gouldii) |
2 |
19.1 (1.2, 345) |
18.3 (1.8, 193) |
California |
Point Reyes Bird Observatory (Unpubl., Museum of Vertebrate Zoology data base (MVZ) |
Song Sparrow (M. m. samuelis) |
1 |
18.2 (1.0, 202) |
18.2 (1.5, 74) |
SF Bay |
Point Reyes Bird Observatory (personal communication), Yvonne Chan (personal communication), MVZ |
Song Sparrow (M. m. pusillula) |
1 |
19.03 (1.15, 48) |
18.8 (1.29, 45) |
SF Bay |
J.C. Nordby (personal communication) |
Song Sparrow (M. m maxillaris) |
1 |
19.6 (1.3, 109) |
19.5 (1.6, 41) |
SF Bay |
PRBO; Y. Chan, MVZ |
Lincoln’s Sparrow |
3 |
19.0 (2.2., 19) |
(18.6, 4.1, 9) |
Newfoundland |
BNA account |
Swamp Sparrow (M. g. georgiana) |
2 |
18.0 (1.0, 35) |
16.6 (0.8, 35) |
Maryland |
B. Olsen (personal communication) |
Swamp Sparrow (M. g. nigrescens) |
1 |
18.1 (1.1, 35) |
16.7 (0.8, 35) |
Delaware |
B. Olsen (personal communication) |
Dark-eyed Junco |
3 |
20.4 (1.2, 28) |
18.8 (0.8, 9) |
Pennsylvania |
Dunning 2006 |
Chestnut-collared Longspur |
3 |
20.3 |
20.2 |
Saskatchewan |
BNA |
|