This is a list of 52 duck health problems, diseases, and sicknesses, with links to resources about each one.

Viral Diseases

Avian Influenza

https://duckdvm.com/condition/avian-influenza

https://www.merckvetmanual.com/poultry/avian-influenza/avian-influenza

Circovirus

https://en.wikipedia.org/wiki/Duck_circovirus

https://www.thepoultrysite.com/articles/major-viral-diseases-of-waterfowl-and-their-control

Duck Virus Enteritis (DVE) / Duck Plague

https://www.msdvetmanual.com/poultry/duck-viral-enteritis/duck-viral-enteritis

https://duckdvm.com/condition/duck-viral-enteritis

Duck Virus Hepatitis (DVH)

https://www.msdvetmanual.com/poultry/duck-viral-hepatitis/duck-viral-hepatitis

https://duckdvm.com/condition/duck-viral-hepatitis

Infectious Bronchitis

https://poultrykeeper.com/respiratory-problems/infectious-bronchitis/

https://www.merckvetmanual.com/poultry/infectious-bronchitis/infectious-bronchitis-in-poultry

https://www.farmhealthonline.com/US/disease-management/poultry-diseases/infectious-bronchitis/

https://www.poultryhub.org/all-about-poultry/health-management/disease/infectious-bronchitis

Infectious LaryngoTracheitis

https://poultrykeeper.com/respiratory-problems/infectious-laryngiotracheitis-ilt/

https://www.msdvetmanual.com/poultry/infectious-laryngotracheitis/infectious-laryngotracheitis-in-poultry

https://www.thepoultrysite.com/disease-guide/infectious-laryngotracheitis-ilt

Newcastle Disease

https://www.thepoultrysite.com/disease-guide/newcastle-disease-paramyxovirus-1

https://www.msdvetmanual.com/poultry/newcastle-disease-and-other-paramyxovirusinfections/newcastle-disease-in-poultry/

https://www.poultryhub.org/all-about-poultry/health-management/disease/newcastle-disease

Viral Arthritis / Tenosynovitis

https://www.msdvetmanual.com/poultry/viral-arthritis/viral-arthritis-in-poultry

https://www.thepoultrysite.com/disease-guide/viral-arthritis

https://www.poultryhub.org/all-about-poultry/health-management/disease/viral-arthritis-tenosynovitis

Bacterial Diseases

Bumblefoot / Staphyloccocus Infection

https://www.fresheggsdaily.blog/2012/03/bumblefoot.html

https://duckdvm.com/condition/bumblefoot

https://poultrydvm.com/condition/bumblefoot

Chlamydiosis

https://poultrykeeper.com/respiratory-problems/chlamydiosis-in-poultry/

Colibacillosis / E.coli

https://www.msdvetmanual.com/poultry/colibacillosis/colibacillosis-in-poultry

Mycoplasma Gallisepticum Infection

https://poultrykeeper.com/respiratory-problems/mycoplasma/

https://www.msdvetmanual.com/poultry/mycoplasmosis/mycoplasma-synoviae-infection-in-poultry

https://extension.umaine.edu/livestock/poultry/mycoplasma-gallisepticum-faq/

https://www.thepoultrysite.com/disease-guide/mycoplasma-gallisepticum-infection-m-g-chronic-respiratory-disease-chickens

https://poultrydvm.com/pathogens/mycoplasma-gallisepticum

Riemerella Anatipestifer Infection / Pasteurella / Avian Cholera

https://www.msdvetmanual.com/poultry/riemerella-anatipestifer-infection/riemerella-anatipestifer-infection-in-poultry?autoredirectid=16880

Salmonellosis

https://duckdvm.com/condition/salmonellosis

Spirochetosis

https://poultrydvm.com/condition/avian-spirochetosis

https://www.msdvetmanual.com/poultry/avian-spirochetosis/avian-spirochetosis

Streptococcal Infection

https://www.thepoultrysite.com/disease-guide/streptococcus-bovis-septicaemia

https://en.wikivet.net/Streptococcus_%26_Enterococcus_Infections_-_Poultry

Fungal Infections

Aspergillosis / Mycosis

https://duckdvm.com/condition/aspergillosis

Nutritional Deficiencies

Angel Wing / Slipped Wing

https://duckdvm.com/condition/angel-wing

https://www.cacklehatchery.com/how-to-prevent-angel-wing-in-ducks-and-geese/

Choline Deficiency

https://duckdvm.com/condition/choline-deficiency

Niacin Deficiency / Vitamin B3 Deficiency

https://duckdvm.com/condition/niacin-deficiency

https://tiramarhomestead.com/2018/05/what-you-need-to-know-about-ducks-and-niacin/

https://metzerfarms.blogspot.com/2011/03/are-my-ducklings-leg-problems-due-to.html

https://www.backyardchickens.com/articles/foot-and-leg-problems-in-waterfowl-niacin-deficiency.68003/

Rickets

https://poultrydvm.com/condition/rickets

https://www.poultryhub.org/all-about-poultry/health-management/disease/rickets-and-cage-layer-fatigue

Thiamine Deficiency

https://duckdvm.com/condition/thiamin-deficiency

Vitamin A Deficiency

https://duckdvm.com/condition/vitamin-a-deficiency

Vitamin B6 Deficiency

https://duckdvm.com/condition/vitamin-B6-deficiency

Vitamin D Deficiency

https://duckdvm.com/condition/vitamin-d-deficiency

Parasites

Cecal Worms

https://poultrykeeper.com/digestive-system-problems/cecal-worms-or-heterakis-gallinarum/

Gapeworm

https://poultrykeeper.com/respiratory-problems/gapeworm/

Gizzard Worm

https://poultrykeeper.com/digestive-system-problems/gizzard-worm-amidostomum-anseris/

Large Roundworm

https://poultrykeeper.com/digestive-system-problems/chicken-roundworms-or-ascarida-galli/

Lice

https://poultrykeeper.com/external-problems/lice-on-chickens-and-poultry/

https://duckdvm.com/condition/lice

Mites

http://www.majesticwaterfowl.org/mmissue13.htm

https://duckdvm.com/condition/mites

Tapeworms

https://poultrykeeper.com/digestive-system-problems/tape-worms-or-cestodes/

Poisoning

Aflatoxin Poisoning

https://duckdvm.com/condition/aflatoxicosis

https://www.thepoultrysite.com/disease-guide/mycotoxicosis

Botulism

https://www.msdvetmanual.com/poultry/botulism/botulism-in-poultry

https://duckdvm.com/condition/botulism

https://beautyofbirds.com/botulism/

Hardware Disease

https://www.fresheggsdaily.blog/2015/07/preventing-hardware-disease-heavy-metal.html

Insecticides and Rodenticides

https://www.vet.cornell.edu/animal-health-diagnostic-center/programs/duck-research-lab/health-care

https://duckdvm.com/condition/rodenticide-toxicity

Rapeseed Meal Poisoning:

https://www.vet.cornell.edu/animal-health-diagnostic-center/programs/duck-research-lab/health-care

Zinc Poisoning

https://duckdvm.com/condition/zinc-poisoning

Miscellaneous Health Problems

Blocked Tear Duct

https://duckdvm.com/condition/blocked-tear-duct

Conjunctivitis / Pink Eye

https://duckdvm.com/condition/dry-eye

Egg Binding

https://www.backyardchickens.com/articles/egg-binding-symptoms-treatment-and-prevention.66978/

https://duckdvm.com/condition/egg-binding

https://shagbarkbantams.com/egg-binding-in-chickens/

Egg Yolk Peritonitis

https://www.theveterinaryexpert.com/backyard-poultry/egg-yolk-peritonitis/

https://duckdvm.com/condition/egg-yolk-peritonitis

Foamy Eye

https://thecapecoop.com/foamy-eye-disease-ducks/

https://www.fresheggsdaily.blog/2015/08/treating-foamy-eye-and-sinus-issues-in.html

Impacted Crop

http://www.majesticwaterfowl.org/mmissue46.htm

https://poultrykeeper.com/digestive-system-problems/impacted-crop/

Lameness

https://poultrykeeper.com/skeletal-muscular-nervous/lameness/

https://www.cacklehatchery.com/what-causes-a-duck-to-limp-and-go-lame/

Prolapsed Penis/Vent

https://duckdvm.com/condition/penis-prolapse

http://www.majesticwaterfowl.org/mmissue28.htm

https://duckdvm.com/condition/oviduct-prolapse

https://poultrykeeper.com/reproductive-system-problems/prolapsed-oviduct/

Sinusitis / Sinus Infection

https://www.fresheggsdaily.blog/2015/08/treating-foamy-eye-and-sinus-issues-in.html

https://poultrydvm.com/condition/sinusitis

Tear Duct Infection

http://www.majesticwaterfowl.org/mmissue32.htm

Water Belly / Ascites

https://commonsensehome.com/ascites-in-ducks/

https://backyardpoultry.iamcountryside.com/poultry-101/my-experience-with-ascites-water-belly/

Wet Feather

https://www.hobbyfarms.com/how-to-treat-wet-feather-in-ducks/

https://www.fresheggsdaily.blog/2016/02/treating-and-preventing-wet-feather-in.html

https://duckdvm.com/condition/wet-feather

https://poultrykeeper.com/external-problems/wet-feather/

Wry Neck

https://www.fresheggsdaily.blog/2014/04/preventing-and-treating-wry-neck-in.html

https://poultrydvm.com/condition/wry-neck

http://www.majesticwaterfowl.org/mmissue165.htm