Abstract

Precocial struts were observed in 95 per cent of turkey poults of both sexes, wild and domesticated. In male turkey poults it occurred with about constant frequency up to day 100 (domesticated turkey: 0·6 struts per hr of observation time; wild turkeys: 0·1 struts per hr observation time) and dramatically increased in frequency after day 130, In female turkey poults, the incidence was much lower (about 0·01 struts per hr observation time) and did not shown any marked increase later on. Struts can be elicited by objects the poults are imprinted upon (mother hen, siblings, or human hand or foot in human imprinted poults). However, precocial struts can also occur spontaneously; i.e. in the absence of external stimulation by an imprinting object.

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