1. Editorial

   • Lee R. Shugart

   Editorial Introduction Pages: 7 - 7

2. Retinoids, LRAT and REH Activities in Eggs of Japanese Quail Following Maternal and in ovo Exposures to 3,3′,4,4′-Tetrachlorobiphenyl

   • Monique H. Boily
   • Aristocle Ndayibagira
   • Philip A. Spear

   OriginalPaper Pages: 9 - 21

3. Lead Poisoning in Upland-foraging Birds of Prey in Canada

   • A.J. Clark
   • A.M. Scheuhammer

   OriginalPaper Pages: 23 - 30

4. Using Chorioallantoic Membranes for Non-lethal Assessment of Persistent Organic Pollutant Exposure and Effect in Oviparous Wildlife

   • George P. Cobb
   • Tim A. Bargar
   • Todd A. Anderson

   OriginalPaper Pages: 31 - 45

5. Trace Elements in Lesser Scaup (Aythya affinis) from the Mississippi Flyway

   • Christine M. Custer
   • Thomas W. Custer
   • David E. Wooten

   OriginalPaper Pages: 47 - 54

6. Development and Validation of a Herring Gull Embryo Toxicokinetic Model for PCBs

   • Ken G. Drouillard
   • Ross J. Norstrom
   • David B. Peakall

   OriginalPaper Pages: 55 - 68

7. Common Loon Eggs as Indicators of Methylmercury Availability in North America

   • D.C. Evers
   • K.M. Taylor
   • A.M. Scheuhammer

   OriginalPaper Pages: 69 - 81

8. Bioaccumulation Patterns and Temporal Trends of Mercury Exposure in Wisconsin Common Loons

   • Brick M. Fevold
   • Michael W. Meyer
   • Stanley A. Temple

   OriginalPaper Pages: 83 - 93

9. Influence of Food Supply and Chlorinated Hydrocarbon Contaminants on Breeding Success of Bald Eagles

   • Christopher E. Gill
   • John E. Elliott

   OriginalPaper Pages: 95 - 111

10. An Assessment of DDT and Other Chlorinated Compounds and the Reproductive Success of American Robins (Turdus migratorius) Breeding in Fruit Orchards

    • Harpreet Gill
    • Laurie K. Wilson
    • John E. Elliott

    OriginalPaper Pages: 113 - 123

11. Gonadal Feminization and Halogenated Environmental Contaminants in Common Terns (Sterna hirundo): Evidence That Ovotestes in Male Embryos do not Persist to the Prefledgling Stage

    • Constance A. Hart
    • Ian C. T. Nisbet
    • Mark E. Hahn

    OriginalPaper Pages: 125 - 140

12. Assessing Temporal Trends in Contaminants from Long-term Avian Monitoring Programs: The Influence of Sampling Frequency

    • Craig E. Hebert
    • D.V. Chip Weseloh

    OriginalPaper Pages: 141 - 151

13. Hepatic EROD Activity is Not a Useful Biomarker of Polychlorinated Biphenyl Exposure in the Adult Herring Gull (Larus argentatus)

    • Sean W. Kennedy
    • Glen A. Fox
    • Suzanne F. Trudeau

    OriginalPaper Pages: 153 - 161

14. Sensitivity of Bald Eagle (Haliaeetus leucocephalus) Hepatocyte Cultures to Induction of Cytochrome P4501A by 2,3,7,8-Tetrachlorodibenzo-p-dioxin

    • Sean W. Kennedy
    • Stephanie P. Jones
    • John E. Elliott

    OriginalPaper Pages: 163 - 170

15. Effects of Methyl Mercury Exposure on the Growth of Juvenile Common Loons

    • Kevin P. Kenow
    • Steve Gutreuter
    • William H. Karasov

    OriginalPaper Pages: 171 - 181

16. Biological Effects of Marine PCB Contamination on Black Guillemot Nestlings at Saglek, Labrador: Liver Biomarkers

    • Zou Zou A. Kuzyk
    • Neil M. Burgess
    • Glen A. Fox

    OriginalPaper Pages: 183 - 197

17. Effects of Dietary PCB Exposure on Adrenocortical Function in Captive American Kestrels (Falco sparverius)

    • Oliver P. Love
    • Laird J. Shutt
    • David M. Bird

    OriginalPaper Pages: 199 - 208

18. Chlorinated Hydrocarbon Contamination in Osprey Eggs and Nestlings from the Canadian Great Lakes Basin, 1991–1995

    • Pamela A. Martin
    • Shane R. De Solla
    • Peter Ewins

    OriginalPaper Pages: 209 - 224

19. Biomarker Responses in Nesting, Common Eiders in the Canadian Arctic in Relation to Tissue Cadmium, Mercury and Selenium Concentrations

    • Mark Wayland
    • Judit J.E.G. Smits
    • Jonathan Keating

    OriginalPaper Pages: 225 - 237

20. In Vitro Biomonitoring in Polar Extracts of Solid Phase Matrices Reveals the Presence of Unknown Compounds with Estrogenic Activity

    • J. Legler
    • P. Leonards
    • A.J. Murk

    OriginalPaper Pages: 239 - 250

21. Age-related Differences in the Sensitivity of the Fish Immune Response to a Coplanar PCB

    • J.E. Duffy
    • E.A. Carlson
    • J. T. Zelikoff

    OriginalPaper Pages: 251 - 259

22. Relative Contributions of Organochlorine Contaminants, Parasitism, and Predation to Reproductive Success of Eastern Spiny Softshell Turtles (Apalone spiniferus spiniferus) from Southern Ontario, Canada

    • Shane R. De Solla
    • Michelle L. Fletcher
    • Christine A. Bishop

    OriginalPaper Pages: 261 - 270

23. Subtle Effects of Herbicide Use in the Context of Genetically Modified Crops: A Case Study with Glyphosate (Roundup®)

    • Lynda G. Blackburn
    • CÉline Boutin

    OriginalPaper Pages: 271 - 285

24. Effects of Endocrine Modulators on Sex Differentiation in Birds

    • Björn Brunström
    • Jeanette Axelsson
    • Krister Halldin

    OriginalPaper Pages: 287 - 295

25. Review: Porphyrins as Biomarkers for Hazard Assessment of Bird Populations: Destructive and Non-destructive Use

    • Silvia Casini
    • M. Cristina Fossi
    • Aristeo Renzoni

    OriginalPaper Pages: 297 - 305

26. Neurotoxic Pesticides and Behavioural Effects Upon Birds

    • C.H. Walker

    OriginalPaper Pages: 307 - 316

27. Behavioural Effects of Pesticides in Bees–Their Potential for Use in Risk Assessment

    • Helen M. Thompson

    OriginalPaper Pages: 317 - 330

28. A Proposal for the Use of Biomarkers for the Assessment of Chronic Pollution and in Regulatory Toxicology

    • Richard D. Handy
    • Tamara S. Galloway
    • Michael H. Depledge

    OriginalPaper Pages: 331 - 343

29. Immunotoxicity of Organophosphorous Pesticides

    • Tamara Galloway
    • Richard Handy

    OriginalPaper Pages: 345 - 363

30. Use of Retrospective Data to Assess Ecotoxicological Monitoring Needs for Terrestrial Vertebrates Residing in Atlantic Coast Estuaries

    • Jonathan B. Cohen
    • Barnett A. Rattner
    • Nancy H. Golden

    OriginalPaper Pages: 365 - 375