Air sacs, inflammation	Infectious Catarrh, Ornithosis, Mycoplasmosis
Balance disorders	Salmonellosis, Paramyxovirus infection, Streptococcus infection
Breast, blueish	Oxigen deficit caused by a respiratory disease or by insufficient loft ventilation; feed mixture too high in protein
Breastbone, deformation of the	Rickets = see Annual prevention plan - Young pigeons
Breath, short of	Salmonellosis (organic form), Ornithosis, Mycoplasmosis
Breathing rapid	Aspergillosis
Canker	Trichomoniasis
Condition, general, impaired	Infectious Catarrh, Ornithosis, Trichomoniasis, Young Bird Sickness
Conjunctivitis, bilateral	Infectious Catarrh, Ornithosis, Haemophilus Catarrh
Conjunctivitis, unilateral	Ornithosis
Consumption, complete	Worm Infestation, Tuberculosis
Crop mucosa, swollen	Young Bird Sickness, Trichomoniasis
Crop puffy	Young Bird Sickness
Crop, sour, water-filled	Young Bird Sickness, Candida infection (Trush), crop oclusion by foreign bodies
Debility	Coccidiosis, E.coli infection, Hexamitiasis, Staphylococcus infection
Diarrhoea, bloody	Hexamitiasis, Salmonellosis, E.coli infection, Worm infestation, Coccidiosis (high grade)
Diarrhoea, greenish	Salmonellosis
Diarrhoea, malodorous	Hexamitiasis, Coccidiosis
Diarrhoea, muco-aqueous	Infectious Catarrh, Ornithosis, Hexamitiasis, Salmonellosis, E.coli infection, Coccidiosis (medium grade)
Diarrhoea, rice water-like	Hexamitiasis
Disorder, systemic	E.coli infection, Streptococcus infection
Down moulting, cessation	Infectious Catarrh, Ornithosis, Trichomoniasis
Droppings, formed but in puddles	Paramyxovirus infection
Droppings, mucoid in yellow-green puddles	Young Bird Sickness
Droppings, soft	Coccidial infestation, Worm infestation, Stress
Droppings, sourish-smelling	Trichomoniasis
Droppings, wet	Infectious Catarrh, Ornithosis, Stress, Trichomoniasis, Hexamitiasis, Coccidiosis
Eggs, poor hatchability	Salmonellosis
Eggs, thin shells	Deficit of calcium and/or vitamin D and/or phosphorus
Elbow joint, thickening	Salmonellosis
Emaciation, acute (going light)	E.coli infection, Young Bird Sickness, Coccidiosis
Enteritis, acute	Hexamitiasis, Salmonellosis, E.coli infection, Coccidiosis
Eye discharge, watery	Salmonellosis, E.coli infection, Mycoplasmosis
Eyelid, swollen	Infectious Catarrh, Trichomoniasis
Eyelids, severe swelling	Haemophilus Catarrh
Feather formation, inadequate	Ectoparasites (feather lice), Nutritional deficits
Feather-pulling	Ectoparasites, Deficit of protein and/or calcium, Candida infection (Trush)
Feathers, loss of	Ectoparasites (body mange mites)
Feed intake, increased	Worm Infestation
Feed intake, reduced	Trichomoniasis, Hexamitiasis, Coccidiosis, E.coli infection
Fly, reluctance	Infectious Catarrh, Ornithosis, Trichomoniasis, Young Bird Sickness
Growth retardation, nestlings	Trichomoniasis, Salmonellosis, Candida infection (Trush)
Joint, swollen	Salmonellosis, Gout
Lacrimal sac, bulging of the	Haemophilus Catarrh
Laryngeal deposits, whitish yellow	Infectious Catarrh, Ornithosis, Trichomoniasis
Leg joint, thickening	Salmonellosis, Gout
Leg paralysis	Salmonellosis, Paramyxovirus infection
Listlessness	Infectious Catarrh, Ornithosis, Trichomoniasis, Coccidiosis
Mortality, nestlings	Streptococcus infection, Trichomoniasis
Movements, twisting	Paramyxovirus infection, Salmonellosis
Mucus (beak), stringy	Infectious Catarrh, Ornithosis, Trichomoniasis
Nasal discharge, aqueouse	Infectious Catarrh, Ornithosis, Trichomoniasis
Nasal discharge, mucopurulent	Infectious Catarrh, Ornithosis, Trichomoniasis, Mycoplasmosis
Nasal discharge, yellowish brown	Infectious Catarrh, Ornithosis, Trichomoniasis
Neck, torsion of the	Salmonellosis, Paramyxovirus infection, Streptococcus infection
Nervousness	Ectoparasites
Newcastle Disease	Paramyxovirus infection
Nictitating membrane, inflammation	Haemophilus Catarrh
Nose scratching	Infectious Catarrh, Ornithosis, Trichomoniasis
Nose wattle, grey	Infectious Catarrh, Ornithosis, Trichomoniasis
Overturning	Paramyxovirus infection
Paratyphus	Salmonellosis
Performance, rapid reduction	Young Bird Sickness, Salmonellosis
Performance, reduced	Infectious Catarrh, Trichomoniasis, Coccidiosis
Plumage, puffed-up	Coccidial infestation, Worm infestation
Plumage, rough	Worm infestation, Ectoparasites
Proliferations, scabby	Pigeon Pox
Rattling	Infectious Catarrh, Ornithosis, Mycoplasmosis, Trichomoniasis
Respiration, difficulty in	Infectious Catarrh, Ornithosis, Trichomoniasis, Herpesvirus infection
Respiratory murmurs	Infectious Catarrh, Mycoplasmosis, Trichomoniasis
Restlessness	Ectoparasites
Rickets	see Annual prevention plan - Young pigeons
Salmonella typhi murium	The causative organisms which produce salmonellosis in pigeons.
Septicaemia	Bacterial infections (E.coli, Streptococcus)
Sneezing	Infectious Catarrh, Ornithosis, Trichomoniasis
Throat mucosa, reddening	Trichomoniasis, Young Bird Sickness, Infectious Catarrh
Throat mucosa, white to grey dots	Salivary stones (Sialoliths)
Throat mucosa, yellow dots	Trichomoniasis
Throat, swelling of the mucosa	Trichomoniasis, Infectious Catarrh
Timidity	Paramyxovirus infection
Tongue, greenish furring	Aspergillosis
Umbilical abscess, squabs	Trichomoniasis
Umbilical infection, squabs	Trichomoniasis
Vitality, reduced	Trichomoniasis, Worm infestation, Ectoparasites
Vomiting	Young Bird Sickness, Worm infestation, Field poisening, Candida infection (Trush)
Walking backwards	Paramyxovirus infection
Water intake, excessive	Paramyxovirus infection, Coccidiosis
Water intake, increased	see Wet Droppings, Hexamitiasis, E.coli infection
Water intake, reduced	Infectious Catarrh
Weakness, nestlings	Infectious Catarrh
Weight, loss of	Hexamitiasis, Salmonellosis, Worm infestation, Trichomoniasis, Coccidiosis
White dots (throat)	Salivary stones (Sialoliths)
Wind pipe (trachea), inflammation of	Infectious Catarrh, Ornithosis, Trichomoniasis
Wing paralysis	Salmonellosis
Yellow dots (throat)	Trichomoniasis