Adjective
oestrous (not comparable)
(Britain) Alternative spelling of estrous
The estrous cycle (also spelled oestrous) controls when a mare is sexually receptive toward a stallion, and helps to physically prepare the mare for conception. Source: Internet
In highly competitive situations such as males fighting for access to oestrous females or at limited drinking spots, the fights are brief. Source: Internet
These animals do not reproduce well in captivity, due to the difficulty of handling musth bulls and limited understanding of female oestrous cycles. Source: Internet
Flanged males attract oestrous females with their characteristic long calls. citation Those calls may also suppress development in younger males. Source: Internet
Once an oestrous female is detected, the male will attempt to court her. Source: Internet
Thus it is usual to wait one or two further oestrous cycles before rebreeding, unlike the practice with mares. Source: Internet