We now have two 'boomimg' rhea as 'White Toe', who we have for a long time suspected was a male, has joined his brother and has now been seen with mouth slightly open, neck elongated and fluffed up. Both males are also now displaying frequently and one of the grey girls is being somewhat flirtatious and 'interested'.
The jury is still out on what we have with the whites: we think three males and one female but hope, as with the greys we have two of each, They are just three weeks younger than the greys but we are seeing no signs of displaying or booming – yet!!!!