A person who keeps and rears (breeds) birds.(noun)
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Use "aviculturist" in a sentence
"'I am by way of being an aviculturist, albeit an amateur,' he volunteered modestly."
"In providing nesting accommodation for his birds the aviculturist must endeavour to imitate their natural surroundings and supply sites as nearly as possible similar to those which the birds, to whatever order they may belong, would naturally select."
"There is a very large group of insectivorous and fruit-eating birds very suitable for aviculture, but their mode of living necessarily involves considerable care on the part of the aviculturist in the preparation of their food."