oestrus in a sentence

Examples

1. Both sexes become sexually mature by the time they are a year old; females enter oestrus from January to March.
2. Old bulls tend to lead a solitary life, though they may occasionally visit female herds looking for females in oestrus.
3. A female not in oestrus will avoid the male's advances, and may even let out a whistling call.
4. Many / most mammals come into " heat " or oestrus, where people and a few others don't.
5. Mating begins after the male confirms that the female is in oestrus, which he does by sniffing her vulva and urine.
6. He was accurate in detecting whether a mare was in oestrus or not, and did not attempt to serve pregnant mares.
7. Ranges of females hardly overlap, whereas the territory of a male can include the territories of two to three females in oestrus.
8. Female knockout mice reach sexual maturity faster than their wild-type counterparts, have a longer oestrus cycle and produce more litters.
9. Bulling is used by farmers to recognise oestrus, which is important to determine the fertile period when cows may be artificially inseminated.
10. To identify his territory, the male marks trees by oestrus will signal their availability by scent marking more frequently and increasing their vocalisations.