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Belant, Jerrold L.; Dolbeer, Richard A. Age classification of laughing gulls based on summer plumage. [ Clasificacion por edad de Larus atricilla basada en el plumaje veraniego. ] J. Field Ornithol.; 67(4):565-574. 1996.

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Braun, Clait E. DETERMINATION OF BLUE GROUSE SEX AND AGE FROM WING CHARACTERISTICS. Colo. Div. Wildl. Game Inf. Leafl.; No. 86. 4p. Aug.1971. WR 161

Brennan, Leonard A. and William M. Block SEX DETERMINATION OF MOUNTAIN QUAIL RECONSIDERED. J. Wildl. Manage.; 49(2):475-476. 1985. WR 198

Brock, Kenneth J. TEMPORAL SEPARATION OF CERTAIN ADULT AND JUVENILE SHOREBIRDS DURING FALL MIGRATION. Indiana Audubon Q.; 68(2):67-74. 1990. WR 236

Brooks, William S. A TENTATIVE KEY FOR SEX DETERMINATION OF COMMON REDPOLLS (ACANTHIS FLAMMEA FLAMMEA) IN THE NORTHERN UNITED STATES DURING WINTER. Bird-Banding; 44(1):13-21. 1973. WR 153:38

Bunnell, S. Dwight; Rensel, Jack A.; Kimball, John F., Jr. and Wolfe, Michael L. DETERMINATION OF AGE AND SEX OF DUSKY BLUE GROUSE. J. Wildl. Manage.; 41 (4): 662-666. Oct. 1977. WR 168

Burger, Joanna DETERMINING SEX RATIOS FROM COLLECTED SPECIMENS. Condor; 85(4):503. Nov. 1983. WR 192

Burger, Joanna and Michael Gochfeld AGE DIFFERENCES IN FORAGING EFFICIENCY OF AMERICAN AVOCETS RECURVIROSTRA AMERICANA. Bird Behav.; 6(2):66-71. 1986. WR 204

Carpenter, Thomas W. UTILITY OF WING LENGTH, TAIL LENGTH AND TAIL BARRING IN DETERMINING THE SEX OF BARRED OWLS COLLECTED IN MICHIGAN AND MINNESOTA. Condor; 94(3):794-795. 1992. WR 232

Chandler, C. Ray and Robert S. Mulvihill THE USE OF WING SHAPE INDICES: AN EVALUATION. Ornis Scand.; 19(3):212-216. 1988. WR 212

Clark, James M. USE OF TOE AND SHANK LENGTHS AS SEX DETERMINANTS IN WOODCOCK. Proc. Annu. Conf. Southeast. Assoc. Fish Wildl. Agencies; 32:42-47. 1978[1979]. WR 177

Coleman, John S. and James D. Fraser AGE ESTIMATION AND GROWTH OF BLACK AND TURKEY VULTURES. J. Field Ornithol.; 60(2):197-208. 1989. In English with Spanish summ. WR 214

Cooper, Sheldon J. Problems in using morphometrics to sex monomorphic birds: an example using black-capped chickadees. N. Am. Bird Bander; 21(2):45-48. 1996.

Coulter, Malcolm C. ASSORTATIVE MATING AND SEXUAL DIMORPHISM IN THE COMMON TERN. Wilson Bull.; 98(1):93-100. 1986. WR 201

Davis, Jeffrey A. SEXING AND AGING CRITERIA OF THE RUFFED GROUSE IN OHIO. M.S. thesis, Ohio Univ.; 1965. WR 238

Delany, Michael F.; Clinton T. Moore and Donald R. Progulske, Jr. DISTINGUISHING GENDER OF FLORIDA GRASSHOPPER SPARROWS USING BODY MEASUREMENTS. Fla. Field Nat.; 22(2):48-51. 1994. WR 249

Edwards, Thomas C., Jr. and Michael N. Kochert USE OF BODY WEIGHT AND LENGTH OF FOOTPAD AS PREDICTORS OF SEX IN GOLDEN EAGLES. J. Field Ornithol.; 57(4):317-319. 1986. WR 204

Esler, Daniel and James B. Grand COMPARISON OF AGE DETERMINATION TECHNIQUES FOR FEMALE NORTHERN PINTAILS AND AMERICAN WIGEON IN SPRING. Wildl. Soc. Bull.; 22(2):260-264. 1994. WR 244

Evans, Daniel R.; Edwin M. Hoopes and Curtice R. Griffin DISCRIMINATING THE SEX OF LAUGHING GULLS BY LINEAR MEASUREMENTS. J. Field Ornithol.; 64(4):472-476. 1993. In English with Spanish summ. WR 241

Evans, Daniel R.; Paul M. Cavanagh; Thomas W. French and Bradford G. Blodget IDENTIFYING THE SEX OF MASSACHUSETTS HERRING GULLS BY LINEAR MEASUREMENTS. J. Field Ornithol.; 66(1):128-132. 1995. In English with Spanish summ. WR 248

Evrard, James O. Accuracy of aging duck broods in the field. [ Presicion para determinar la edad de patitos en el campo. ] J. Field Ornithol.; 67(3):453-455. 1996.

Fancy, Steven G.; Thane K. Pratt; Gerald D. Lindsey; Calvin K. Harada; Alfred H. Parent, Jr., and James D. Jacobi IDENTIFYING SEX AND AGE OF APAPANE AND IIWI ON HAWAII. J. Field Ornithol.; 64(2):262-269. 1993. In English with Spanish summ. WR 236

Ferguson, Edgar L.; Dennis G. Jorde and John J. Sease USE OF 35-MM COLOR AERIAL PHOTOGRAPHY TO ACQUIRE MALLARD SEX RATIO DATA. Photogr. Eng. Remote Sensing; 47(6):823-927. 1981. From Ecol. Abstr. 1982/3:82L/3813. 1982. WR 189

Fleming, Tracy L.; Halverson, Joy L.; Buchanan, Joseph B. Use of DNA analysis to identify sex of northern spotted owls (Strix occidentalis caurina) [ Uso de analisis de DNA para identificar sexo en Strix occidentalis caurina. ] J. Raptor Res.; 30(3):118-122. 1996.

Folse, Leon J., Jr. and Arnold, Keith A. SECONDARY SEX CHARACTERISTICS IN ROADRUNNERS. Bird-Banding; 47 (2): 115-118. 1976. WR 162

Freer, Valerie and Barbara Belanger A TECHNIQUE FOR DISTINGUISHING THE AGE CLASSES OF ADULT BANK SWALLOWS. J. Field Ornithol.; 52(4):341-343. 1981. WR 185

Fugle, Gary N. and Stephen I. Rothstein AGE- AND SEX-RELATED VARIATION IN SIZE AND CROWN PLUMAGE BRIGHTNESS IN WINTERING WHITE-CROWNED SPARROWS. J. Field Ornithol.; 56(4):356-368. 1985. WR 202

George, William G. AGE DETERMINATION OF HAIRY AND DOWNY WOODPECKERS IN EASTERN NORTH AMERICA. Bird-Banding; 43(2):128-135. Apr. 1972. WR 148:67

Glahn, James F. and R. Barry McCoy MEASUREMENTS OF WINTERING DOUBLE-CRESTED CORMORANTS AND DISCRIMINANT MODELS OF SEX. J. Field Ornithol.; 66(2):299-304. 1995. In English with Spanish summ. WR 249

Gray, Rosemary Elizabeth Faulk SEX AND AGE DETERMINATION IN THE WHITE-THROATED SPARROW. M.S. thesis, Auburn Univ.; 54p. 1969. WR 229

Greenberg, Robert E.; Stanley L. Etter and William L. Anderson EVALUATION OF PROXIMAL PRIMARY FEATHER CRITERIA FOR AGING WILD PHEASANTS. J. Wildl. Manage.; 36(3):700-705. July 1972. WR 147:79

Hamel, Paul B. and Steven J. Wagner LABORATORY AND FIELD INVESTIGATION OF SKULL PNEUMATIZATION IN SONG AND SWAMP SPARROWS. J. Field Ornithol.; 61(1):34-40. 1990. In English with Spanish summ. WR 218

Hamerstrom, Frances AGEING RED-TAILED HAWKS BY TAIL COLOR IN WISCONSIN. Inl. Bird Banding News; 43(1):9-11. Jan.-Feb. 1971. WR 146:128

Hansrote, Charles; Hansrote, Melva Wing chord data-re-examination of a pine siskin irruption in Virginia. N. Am. Bird Bander; 21(3):88-93. 1996.

Haramis, G. M.; E. L. Derleth and D. G. McAuley TECHNIQUES FOR TRAPPING, AGING, AND BANDING WINTERING CANVASBACKS. J. Field Ornithol.; 53(4):342-351. 1982. WR 189

Harrington, Brian A. and Avery L. Taylor METHODS FOR SEXING IDENTIFICATION AND ESTIMATION OF WING AREA IN SEMIPALMATED SANDPIPERS. J. Field Ornithol.; 53(2):174-177. 1982. WR 187

Harvey, W. F. IV; G. R. Hepp and R. A. Kennamer AGE DETERMINATION OF FEMALE WOOD DUCKS DURING THE BREEDING SEASON. Wildl. Soc. Bull.; 17(3):254-258. 1989. WR 216

Hayward, Gregory D. and Patricia H. Hayward BODY MEASUREMENTS OF BOREAL OWLS IN IDAHO AND A DISCRIMINANT MODEL TO DETERMINE SEX OF LIVE SPECIMENS. Wilson Bull.; 103(3):497-500. 1991. WR 227

Henny, Charles J.; John L. Carter and Bette J. Carter A REVIEW OF BUFFLEHEAD SEX AND AGE CRITERIA WITH NOTES ON WEIGHTS. Wildfowl; 32:117-122. 1981. WR 185

Hepp, Gary R. EFFECTS OF BODY WEIGHT AND AGE ON THE TIME OF PAIRING OF AMERICAN BLACK DUCKS. Auk; 103(3):477-484. 1986. WR 203

Hill, Geoffrey E. AGING AND SEXING BLACK-HEADED GROSBEAKS IN ALTERNATE PLUMAGE. J. Field Ornithol.; 58(3):311-317. 1987. In English with Spanish summ. WR 207

Hill, Richard A. SEX RATIO AND SEX DETERMINATION OF IMMATURE BROWN-HEADED COWBIRDS. Bird-Banding; 47 (2): 112-114. 1976. WR 162

Hoffman, Richard W. BLUE GROUSE WING ANALYSES: METHODOLOGY AND POPULATION INFERENCES. Colo. Div. Wildl. Spec. Rep.; No. 60. 21p. 1985. Available at $1.00 from Library, Colo. Div. Wildl., 317 W. Prospect Rd., Fort Collins 80526. WR 202

Hoffman, Richard W. SEX CLASSIFICATION OF JUVENILE BLUE GROUSE FROM WING CHARACTERISTICS. J. Wildl. Manage.; 47(4):1143-1147. Oct. 1983. WR 192

Hoffpauir, John Wade THE DEVELOPMENT OF EXTERNAL AGING AND SEXING TECHNQUES AND TRAPPING METHODS FOR COMMON SNIPE (CAPELLA GALLINAGO DELICATA) IN LOUISIANA. M.S. thesis, La. State Univ.; x + 104p. 1969. WR 145:84

Holcomb, Larry C. and Jaeger, Michael GROWTH AND CALCULATION OF AGE IN MOURNING DOVE NESTLINGS. J. Wildl. Manage.; 42 (4): 843-852. Oct. 1978. WR 173

Horak, Gerald J. KANSAS PRAIRIE CHICKENS. Kans. Fish Game Comm. Wildl. Bull.; No. 3. 65p. 1985. WR 200

Jackson, Jerome A. AGE CHARACTERISTCS OF RED-COCKADED WOODPECKERS. Bird-Banding; 50 (1): 23-29. 1979. WR 174

Jeffrey, John J.; Steven G. Fancy; Gerald D. Lindsey; Paul C. Banko; Thane K. Pratt and James D. Jacobi SEX AND AGE IDENTIFICATION OF PALILA. J. Field Ornithol.; 64(4):490-499. 1993. In English with Spanish summ. WR 241

Jehl, Joseph R., Jr. SEXUAL DIMORPHISM AND DIFFERENTIAL NICHE UTILIZATION IN WILSON'S PHALAROPE IN FALL MIGRATION. Wader Study Group Bull.; No. 39. p. 58. Dec. 1983. Abstract only. WR 193

Johnston, Richard F. and Robert C. Fleischer OVERWINTER MORTALITY AND SEXUAL SIZE DIMORPHISM IN THE HOUSE SPARROW. Auk; 98(3):503-511. July 1981. WR 183

Koenig, Walter D. VARIATION AND AGE DETERMINATION IN A POPULATION OF ACORN WOODPECKERS. J. Field Ornithol.; 51(1):10-16. 1980. WR178

Kowalski, Michael P. WEIGHTS AND MEASUREMENTS OF PROTHONOTARY WARBLERS FROM SOUTHERN INDIANA, WITH A METHOD OF AGING MALES. N. Am. Bird Bander; 11(4):129-131. 1986. WR 205

Kushlan, James A. SEXUAL DIMORPHISM IN THE WHITE IBIS. Wilson Bull.; 89 (1): 92-98. Mar. 1977. WR 166

Lamb, Warren A.; Kelley, Alice H. and Cohen, Steven M. AGE DETERMINATION OF BLUE JAYS. Bird-Banding; 49 (3): 215-217. 1978. WR 172

Lamm, Donald W. and John C. Luepke IRIS CHANGES IN HATCHING YEAR YELLOW-EYED JUNCOS. N. Am. Bird Bander; 7(3):93. July-Sept. 1982. WR 189

Lingle, Gary R. and Norman F. Sloan SEXING AND AGING CRITERIA FOR THE WHITE PELICAN. Prairie Nat.; 11(3):83-88. Sept. 1979. WR 177

Lingle, Gary R. FOOD HABITS AND SEXING-AGING CRITERIA OF THE WHITE PELICAN AT CHASE LAKE NATIONAL WILDLIFE REFUGE, NORTH DAKOTA. M.S. thesis, Mich. Technol. Univ.; 1977. WR 173

Lyons, David M. and James A. Mosher AGE-ESTIMATION MODEL FOR NESTLING BROAD-WINGED HAWKS. Wildl. Soc. Bull.; 11(3):268-270. 1983. WR 191

MacNamara, Mark SEXING THE AMERICAN OSPREY USING SECONDARY SEXUAL CHARACTERISTICS. Trans. N. Am. Osprey Res. Conf. U.S. Natl. Park Serv. Trans. Proc. Ser.; no. 2. p. 43-45. 1977. WR 179

Manuwal, David A. CRITERIA FOR AGING CASSIN'S AUKLETS. Bird-Banding; 49 (2): 157-161. 1978. WR 171

McAuley, Daniel G.; Jerry R. Longcore and Greg F. Sepik TECHNIQUES FOR RESEARCH INTO WOODCOCKS: EXPERIENCES AND RECOMMENDATIONS. Proceedings of the Eighth American Woodcock Symposium. Jerry R. Longcore and Greg F. Sepik, editors. U.S. Fish Wildl. Serv. Biol. Rep.; No. 16. p. 5-11. 1993. WR 246

McDonald, David B.; Fitzpatrick, John W.; Woolfenden, Glen E. Actuarial senescence and demographic heterogeneity in the Florida scrub jay. Ecology (Wash., D.C.); 77(8):2373-2381. 1996.

Meigs, James B.; David C. Smith and Joseph Van Buskirk AGE DETERMINATION OF BLACK-CAPPED CHICKADEES. J. Field Ornithol.; 54(3):283-286. 1983. WR 192

Menasco, Keith A. and H. Randolph Perry, Jr. ERRORS FROM DETERMINING SEX OF MOURNING DOVES BY PLUMAGE CHARACTERISTICS. Proc. Annu. Conf. Southeast. Assoc. Fish Wildl. Agencies; 32:224-227. 1978[1979]. WR 177

Miller, Sherri L.; Michael A. Gregg; Amy R. Kuritsubo; Shawn M. Combs; Mary K. Murdock; John A. Nilsson; Barry R. Noon and Richard G. Botzler MORPHOMETRIC VARIATION IN TUNDRA SWANS: RELATIONSHIPS AMONG SEX AND AGE CLASSES. Condor; 90(4):802-815. 1988. WR 212

Moen, Christine A.; Alan B. Franklin and R. J. Gutierrez AGE DETERMINATION OF SUBADULT NORTHERN SPOTTED OWLS IN NORTHWEST CALIFORNIA. Wildl. Soc. Bull.; 19(4):489-493. 1991. WR 228

Morrow, Michael E.; Albert E. Bivings IV and Nova J. Silvy FEATHER REPLACEMENT FOR PREDICTING HATCHING PHENOLOGIES OF MOURNING DOVES. Proc. Annu. Conf. Southeast. Assoc. Fish Wildl. Agencies; 39:499-505. 1985. WR 207

Mueller, Helmut C.; Daniel D. Berger and George Allez AGE, SEX, AND SEASONAL DIFFERENCES IN SIZE OF COOPER'S HAWKS. J. Field Ornithol.; 52(2):112-126. 1981. WR 183

Murphy, Michael T. GROWTH AND AGING OF NESTLING EASTERN KINGBIRDS AND EASTERN PHOEBES. J. Field Ornithol.; 52(4):309-316. 1981. WR185

Naney, Robert H. DEVELOPMENT OF EXTERNAL SEXING AND AGING TECHNIQUES AND TRAPPING METHODS FOR COMMON SNIPE (CAPELLA GALLINAGO DELICATA) IN LOUISIANA. M.S. thesis, La. State Univ.; 55p. 1973. WR 153:72

Nelson, Douglas A. SEXUAL DIFFERENCES IN MEASUREMENTS OF CASSIN'S AUKLET. J. Field Ornithol.; 52(3):233-234. 1981. WR 184

Nesbitt, Stephen A. A TECHNIQUE FOR AGING SANDHILL CRANES USING WING MOLT--PRELIMINARY FINDING. Proc. 1985 Crane Workshop; p. 224-229. 1987. WR 206

Ortega, Catherine P.; Ortega, Joseph C.; Backensto, Stacia A.; Rapp, Cristin A. Improved methods for aging second-year and after-second-year male brown-headed cowbirds. [ Mejoramiento de metodos para estimar la edad de Molothrus ater en segundo año y años posteriores. ] J. Field Ornithol.; 67(4):542-548. 1996.

Passmore, Michael F. and Jarvis, Robert L. RELIABILITY OF DETERMINING SEX OF BAND-TAILED PIGEONS BY PLUMAGE CHARACTERS. Wildl. Soc. Bull.; 7 (2): 124-125. 1979. WR 175

Penkala, Joseph M. A TECHNIQUE FOR IDENTIFYING YEARLING FEMALE ATLANTIC BRANT. J. Wildl. Manage.; 41(3):585-587. July 1977. WR 168

Perry, H. Randolph, Jr.; John D. Newsom and Prentiss E. Schilling EFFORTS TO DEVELOP AN EXTERNAL AGING AND SEXING TECHNIQUE FOR COMMON SNIPE IN LOUISIANA. Proc. Annu. Conf. Southeast. Assoc. Game Fish Comm.; 25:338-346. 1972. WR 148:102

Perry, Horace Randolph, Jr. DEVELOPMENT OF EXTERNAL AGING AND SEXING TECHNIQUES AND TRAPPING METHODS FOR COMMON SNIPE (CAPELLA GALLINAGO DELICATA) IN LOUISIANA WITH NOTES ON HABITAT AND BEHAVIOR. M.S. thesis, La. State Univ.; xviii + 143p. 1971. WR 145:86

Petersen, LeRoy R. and Thompson, Donald R. AGING NESTLING RAPTORS BY 4TH-PRIMARY MEASUREMENTS. J. Wildl. Manage.; 41(3):587-590. July 1977. WR 168

Pine, Donald S. IDENTIFYING SEX OF MOUNTAIN QUAIL BY LENGTH OF CREST PLUME. J. Wildl. Manage.; 45(4):1056-1057. Oct. 1981. WR 183

Piper, Walter H. and R. Haven Wiley EFFECTS OF LAPAROTOMIES ON WINTERING WHITE-THROATED SPARROWS AND THE USEFULNESS OF WING CHORD AS A CRITERION FOR SEXING. J. Field Ornithol.; 62(1):40-45. 1991. In English with Spanish summ. WR 224

Pitts, T. David IDENTIFICATION OF SECOND-YEAR AND AFTER-SECOND-YEAR EASTERN BLUEBIRDS. J. Field Ornithol.; 56(4):422-424. 1985. WR 202

Pugesek, Bruce H. and Kenneth L. Diem AGES OF MATED PAIRS OF CALIFORNIA GULLS. Wilson Bull.; 98(4):610-612. 1986. WR 204

Pyle, Peter and Phil Henderson ON SEPARATING FEMALE AND IMMATURE OPORORNIS WARBLERS IN FALL. Birding; 22(5):222-229. 1990. WR 231

Reese, Kerry P. and John A. Kadlec DETERMINING THE SEX OF BLACK-BILLED MAGPIES BY EXTERNAL MEASUREMENTS. J. Field Ornithol.; 53(4):417-418. 1982. WR 189

Rodriguez, Edward F.; Pugesek, Bruce H.; Diem, Kenneth L. A sexing technique for California gulls breeding at Bamforth Lake, Wyoming. [ Una tecnica para determinar sexos en Larus californicus reproduciendose en el Lago Bamforth, Wyoming. ] J. Field Ornithol.; 67(4):519-524. 1996.

Schew, W. A. and C. T. Collins AGE AND SEX DETERMINATION IN BLACK SKIMMER CHICKS. Pac. Seabird Group Bull.; 15(1):36-37. 1988. Abstract only. WR 210

Schnell, Gary D.; Gary L. Worthen and Michael E. Douglas MORPHOMETRIC ASSESSMENT OF SEUXAL DIMORPHISM IN SKELETAL ELEMENTS OF CALIFORNIA GULLS. Condor; 87(4):484-493. 1985. WR 200

Scott, Thomas W. GROWTH AND AGE DETERMINATION OF NESTLING BROWN-HEADED COWBIRDS. Wilson Bull.; 91(3):464-466. Sept. 1979. WR 176

Shissler, Bryon P.; David E. Samuel and Dennis L. Burkhart AN AGING TECHNIQUE FOR AMERICAN WOODCOCK ON SUMMER FIELDS. Wildl. Soc. Bull.; 9(4):302-305. 1981. WR 186

Slack, Roy S. PRIMARY MOLT PATTERNS OF NORTHERN SAW-WHET OWLS (AEGOLIUS ACADICUS) CAPTURED DURING SPRING MIGRATION. N. Am. Bird Bander; 17(3):97-101. 1992. WR 249

Slack, Roy S. AN UNEXPECTED SEX RATIO IN A SAMPLE OF NORTHERN SAW-WHET OWLS. N. Am. Bird Bander; 17(1):1-5. 1992. WR 249

Slack, Harry E. III. AGE AND SEX RELATED CHARACTERISTICS OF THE LOGGERHEAD SHRIKE (LANIUS L. LUDOVICIANUS) IN COASTAL MISSISSIPPI. N. Am. Bird Bander; 19(3):84-89. 1994. WR 250

Suthers, H. B. and D. D. Suthers AGING AND SEXING GRAY CATBIRDS BY EXTERNAL CHARACTERISTICS. N. Am. Bird Bander; 15(2):45-52. 1990. WR 222

Suthers, Hannah Bonsey SEX DETERMINATION BY WING AND TAIL MEASUREMENTS IN THE SONG SPARROW AND FIELD SPARROW. N. Am. Bird Bander; 19(3):77-83. 1994. WR 250

Suthers, Hannah Bonsey EFFECT OF AGE CLASS SEPARATION ON SEX DETERMINATION BY WING AND TAIL IN VEERY AND WOOD THRUSH. N. Am. Bird Bander; 18(4):142-147. 1993. WR 249

Tacha, Thomas C. and Lewis, James C. SEX DETERMINATION OF SANDHILL CRANES BY CLOACAL EXAMINATION. Proc. 1978 Crane Workshop; p. 81-83. Apr. 1979. WR 174

Tiersch, Terrence R. and Ronald L. Mumme AN EVALUATION OF THE USE OF FLOW CYTOMETRY TO IDENTIFY SEX IN THE FLORIDA SCRUB JAY. J. Field Ornithol.; 64(1):18-26. 1993. In English with Spanish summ. WR 235

Wallin, Jeffrey A. SEX DETERMINATION OF VERMONT FALL-HARVESTED JUVENILE WILD TURKEYS BY THE 10TH PRIMARY. Wildl. Soc. Bull.; 10(1):40-43.1982. WR 186

Weekes, Bill SEX AND THE SINGLE WILD TURKEY GOBBLER. Va. Wildl.; 38 (3): 20-22. Mar. 1977. WR 167

Weinberg, Howard J. and Roland R. Roth RECTRIX SHAPE AS AN INDICATOR OF AGE IN THE WOOD THRUSH. J. Field Ornithol.; 65(1):115-121. 1994. In English with Spanish summ. WR 242

Wells, Shirley; Baptista, Luis F.*; Bailey, Stephen F.; Horblit, Helen M. Age and sex determination in Anna's hummingbird by means of tail pattern. West. Birds; 27(4):204-206. 1996.

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Whitehead, Clifton John, Jr. FOODS AND FEEDING HABITS OF COMMON SNIPE (CAPELLA GALLINAGO DELICATA) IN CAMERON PARISH, LOUISIANA, WITH ECOLOGICAL NOTES AND A DISCUSSION OF METHODS OF SEXING AND AGEING. M.S. thesis, La. State Univ.; 200p. 1965. WR 238

Wiley, R. Haven and Walter H. Piper TIMING OF CRANIAL PNEUMATIZATION IN WHITE-THROATED SPARROWS. Condor; 94(2):336-343. 1992. WR 230

Winker, Kevin SPECIMEN SHRINKAGE IN TENNESSEE WARBLERS AND "TRAILL'S" FLYCATCHERS. J. Field Ornithol.; 64(3):331-336. 1993. In English with Spanish summ. WR 238

Wood, D. Scott COLOR AND SIZE VARIATION IN EASTERN WHITE-BREASTED NUTHATCHES. Wilson Bull.; 104(4):599-611. 1992. WR 235

Yunick, Robert P. ANOTHER ASSESSMENT OF GAPE COLOR IN THE PURPLE FINCH. N. Am. Bird Bander; 16(4):109-111. 1991. WR 249

Yunick, Robert P. FURTHER EXAMINATION OF THE WING STRIPE OF THE PINE SISKIN. N. Am. Bird Bander; 1 (2): 63-66. Apr.-June 1976. WR 167

Yunick, Robert P. A METHOD FOR AGE DETERMINATION OF BLUE JAYS IN NORTHEASTERN UNITED STATES AND SOUTHEASTERN CANADA. N. Am. Bird Bander; 17(1):10-15. 1992. WR 249

Yunick, Robert P. FURTHER OBSERVATIONS ON THE TIMING OF SKULL PNEUMATIZATION IN THE PINE SISKIN. N. Am. Bird Bander; 17(3):93-96. 1992. WR 249

Yunick, Robert P. AGE DETERMINATION OF MALE HOUSE FINCHES. N. Am. Bird Bander; 12(1):8-10. 1987. WR 205

Yunick, Robert P. AGE AND SEX DETERMINATION OF PURPLE FINCHES DURING THE BREEDING SEASON. N. Am. Bird Bander; 8(2):48-51. Apr.-June 1983. WR 193