Iru idahun bayii ma n waye laaarin 85 si 90% eeyan.. 
fún àpẹẹrẹ, àwọn ààjọ  American aladà Union kó àwọn Tetonidae (grouse), Numididae (èyẹ Awo), àti Irnọ́ńbà (àwọn kejì as bíi bíi ọmọ̀mọ̀ ní ẹbí Phasianidae.ètò àti àtànká Míwà ní ó tóbi jùlọ nínú ẹ̀ka Galtafor àkàwé, tí ó sí pẹ̀lú àwọn ẹ̀yà 150.. 