Illustration of rhea
: any of three South American ratite birds (Rhea americana, R. pennata, and R. tarapacensis of the family Rheidae) that resemble but are smaller than the African ostrich and that have three toes, a fully feathered head and neck, an undeveloped tail, and pale gray to brownish feathers that droop over the rump and back
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“Rhea.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/rhea. Accessed 11 Apr. 2025.
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