Changes

|q1= List those medical causes of feather plucking  which are or may be infectious, contagious or transmissible.

|q1= List those medical causes of feather plucking  which are or may be infectious, contagious or transmissible.

|a1= PBFD (circovirus); budgerigar fledgeling disease (Polyomavirus: French moult); ectoparasites (e.g. ''Dermanyssus gallinae''); endoparasites (e.g. Giardia sp.); chlamydiosis; fungal dermatitis.

|a1= PBFD (circovirus); budgerigar fledgeling disease (Polyomavirus: French moult); ectoparasites (e.g. ''Dermanyssus gallinae''); endoparasites (e.g. Giardia sp.); chlamydiosis; fungal dermatitis.

|l1=Feather Plucking

|l1=Feather Plucking#Infectious, Contagious or Transmissible Causes

|q2= List the non-infectious medical, including metabolic, causes of feather plucking.

|q2= List the non-infectious medical, including metabolic, causes of feather plucking.

|a2= Bacterial dermatitis; pulpitis or folliculitis; allergy; hepatitis; hypothyroidism; skin neoplasia; follicular cysts; post-traumatic injury, or arthritic or scar tissue pain; nutritional deficiency (e.g. hypovitaminosis A; B vitamin deficiencies; essential amino acid deficiencies (e.g. lysine)).

|a2= Bacterial dermatitis; pulpitis or folliculitis; allergy; hepatitis; hypothyroidism; skin neoplasia; follicular cysts; post-traumatic injury, or arthritic or scar tissue pain; nutritional deficiency (e.g. hypovitaminosis A; B vitamin deficiencies; essential amino acid deficiencies (e.g. lysine)).

|l2=Feather Plucking

|l2=Feather Plucking#Non-Infectious and Metabolic Causes

|q3= Describe the diagnosis of the aetiologies described in q1.

|q3= Describe the diagnosis of the aetiologies described in q1.

|a3= PCR for PBFD and BFD; physical examination at day and night for ectoparasites; faecal examination for endoparasites; PCR/ELISA (antigen/antibody) for chlamydiosis; skin scrape microscopic examination and culture for fungal dermatitis; stained impression smear, culture and sensitivity for bacterial infections. Also, haematology

|a3= PCR for PBFD and BFD; physical examination at day and night for ectoparasites; faecal examination for endoparasites; PCR/ELISA (antigen/antibody) for chlamydiosis; skin scrape microscopic examination and culture for fungal dermatitis; stained impression smear, culture and sensitivity for bacterial infections. Also, haematology

and biochemistry, thyroid stimulation test, biopsy and histopathology, improved diet and monitoring response to therapy.

and biochemistry, thyroid stimulation test, biopsy and histopathology, improved diet and monitoring response to therapy.

|l3=Feather Plucking

|l3=Feather Plucking#Diagnosis

|q4= List the environmental causes of feather plucking.

|q4= List the environmental causes of feather plucking.

|a4= Excess tobacco smoke; excessively dry atmosphere; excessive day length in direct sunlight; lack of environmental enrichment.

|a4= Excess tobacco smoke; excessively dry atmosphere; excessive day length in direct sunlight; lack of environmental enrichment.

|l4=Feather Plucking

|l4=Feather Plucking#Environmental Causes

|q5= List the psychological causes of feather plucking.

|q5= List the psychological causes of feather plucking.

|a5= Attention seeking; boredom; overcrowding; environmental change or lack of routine; sexual frustration; excessive preening; post untidy feather or wing clipping.

|a5= Attention seeking; boredom; overcrowding; environmental change or lack of routine; sexual frustration; excessive preening; post untidy feather or wing clipping.

|l5=Feather Plucking

|l5=Feather Plucking#Psychological Causes

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