Rhea nana (Dwarf Rhea)

[RSN]

Rhea nana (Dwarf Rhea) was named by Lydekker in 1894 from a single dubious egg from south Patagonia, Argentina1.
References: 1. Knox and Walters (1994).

Source: www.birdlife.org/datazone/species/terms/extinct.html

[another specialist]

this information is not found on the Internet. it is from "Extinct Birds" by Errol Fuller.

"A dwarf ostrich from North Africa. Struthio bidactylus or Levaillant's Ostrich , has been described and so too, has a dwarf rhea, Rea nana, both of which may have been living in the nineteenth century. the validity of both these forms is rather uncertain , however.

Errol Fuller "Extinct Birds" p33

[RSN]

Thanks for the info.

There are no pics (photo or drawing) of the egg? And, the egg is still found in some museum, particular collection, etc.?

[sebbe67]

Great pic RSN

[RSN]

Thanks!!!

I´ve based it in a drawing of an book about animals, a greater rhea one. I just decreased it size and changed a bit the colouration.

[another specialist]

Rhea nana (Dwarf Rhea) was named by Lydekker in 1894 from a single dubious egg from south Patagonia, Argentina

www.birdlife.org/datazone/species/terms/extinct.html

[Carlos]

Information in:

Knox, A. G. & M. P. Walters (1994). Extinct and Endangered Birds in the collections of The Natural History Museum.

p. 32

Rhea nana
Dwarf Rhea

A dubious species described and known only from a single egg.

Reg. no. 1894.11.28.1. From s. Patagonia (Argentina). Source R. Lydekker. Material: 1 whole/good egg. A wax cast of an egg in Museo de la Plata, which is the holotype of R. nana, believed to be a small species of rhea, but never subsequently rediscovered. See Proc. zool. Soc. Lond. 1894: 654

[RSN]

This can be a ''mutant'' egg?

[Carlos]

Most likely just an abnormally small egg either of Rhea americana or Pterocnemia pennata.