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Mei/May 2017 27
See answers on page 28
Which tests would you perform?
What is the most likely
diagnosis?
What treatment would you
recommend?
What advice would you give
to the owners regarding their
aviary?
Dermatology Quiz I Questions
1
2
3
Dr Martin Briggs
BSc, BVSc,
MSc(Med), FRCVS
Registered Specialist
in Veterinary
Dermatology Q ?
A white budgerigar was presented
with crusty outgrowths on the beak
(Figure 1) and legs (Figure 2).
Dermatology
Quiz
1
4
actually be more visible to the horse
than to the trichromatic human.
In the sport of horse-trials, where
most cross-country fences are often
of a similar
colour than
the immediate
surroundings,
the majority
of horses
negotiate such
obstacles with
ease. This
indicates that
the fences are
clearly visible
to the horse,
suggesting
that the horse
probably relies less on colour and
more on other visual features such
as textural differences to distinguish
such objects from their surrounding
environments.
References:
1. Murphy J, Hall C, Arkins S. 2009.
What horses and humans see: A
comparative review. International
Journal of Zoology
2. Hall CA, Cassaday HJ, Vincent
CJ, Derrington AM. 2006. Cone
excitation ratios correlate with
color discrimination performance
in the horse (Equus caballus).
Journal of Comparative
Psychology, 120 (4), pp. 438–
448. v
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