There are three known courtship behaviours in bigfin reef squids, dubbed " male-upturned " mating, " male-parallel " mating, and " head-to-head " mating.
32.
Post-fledging behaviour and development of young falcons appears to be very similar to that of the peregrine falcon, and includes spending time with siblings and parents, and practicing hunting, territorial and courtship behaviours.
33.
Males secrete a spermatophore ( a united mass of sperm ), which is transferred to the female following courtship behaviour, in which the male holds the ends of the female's first legs in his chelicerae.
34.
At the Central Park Zoo itself there have been further same sex couples, with both an all-male couple ( named Squawk and Milo ) and an all-female couple ( named Georgey and Mickey ) conducting courtship behaviour.
35.
Breeding females may advertise oestrus ( being " on heat " or " in season ", i . e . that they are fertile, ovulating and receptive to breeding ) with pheromones ( scent ), courtship behaviour, and visual signals.
36.
The fanning of water over the spermatophores towards the female probably serves to move pheromones from the male to the female-this phenomena is known in many other non-copulating arthropods, and Proctor observed that females only cease predatory behaviours and initiate courtship behaviours after receiving the chemical signals.
37.
He begins by stating " Mr . Poulton fully accepts Darwin's theory of female choice as the source of the greater part of the brilliant colour, delicate patterns, and ornamental appendages that exist among animals, and especially among birds and insects . " Wallace then cites Poulton on the courtship behaviour of spiders:
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