Changes

Female animals regularly enter a phase where they are sexually active and receptive to males; this is collectively known as the [[Female Reproductive Tract -Oestrous Cycle - Anatomy & Physiology|oestrous cycle]]. Some animals are able to reproduce all year round, but many have an anoestrus phase which requires a [[Female Reproductive Tract -Seasonality of Reproduction - Anatomy & Physiology|seasonal response]] for cycling to begin. In some species [[Reproductive Behaviour - Oestrus Behaviour - Anatomy & Physiology|detection of seasonal cycling]] can be crucial to productivity. Female animals have various behavioural and chemical signals which increase their [[Reproductive Behaviour - Attractivity Behaviour - Anatomy & Physiology|attractiveness]] to males and others which signal their [[Reproductive Behaviour - Proceptivity Behaviour - Anatomy & Physiology|receptivity]] to the male.  

Female animals regularly enter a phase where they are sexually active and receptive to males; this is collectively known as the [[Female Reproductive Tract -Oestrous Cycle - Anatomy & Physiology|oestrous cycle]]. Some animals are able to reproduce all year round, but many have an anoestrus phase which requires a [[Female Reproductive Tract -Seasonality of Reproduction - Anatomy & Physiology|seasonal response]] for cycling to begin. In some species [[Reproductive Behaviour - Oestrus Behaviour - Anatomy & Physiology|detection of seasonal cycling]] can be crucial to productivity. Female animals have various behavioural and chemical signals which increase their [[Reproductive Behaviour - Attractivity Behaviour - Anatomy & Physiology|attractiveness]] to males and others which signal their [[Reproductive Behaviour - Proceptivity Behaviour - Anatomy & Physiology|receptivity]] to the male.  

* [[Reproductive Behaviour - Receptivity Behaviour - Anatomy & Physiology|Receptivity Behaviour]]

* [[Reproductive Behaviour - Receptivity Behaviour - Anatomy & Physiology|Receptivity Behaviour]]