| 21. | Grunts are commonly heard from hungry young and from adults in their courtship display.
|
| 22. | It also has an elaborate courtship display and a variety of loud mating calls.
|
| 23. | Male courtship displays include elaborate vocalizations, which the female responds to with nest building.
|
| 24. | While the courtship display hypothesis speaks to sexual selection and competition, even between females.
|
| 25. | Visual cues are important for males to find females, and courtship displays can be elaborate.
|
| 26. | In courtship display on membranous neck sacks and the drum-like call of the greater prairie-chicken.
|
| 27. | Biological ornaments are used in courtship displays in many species, especially insects, fish, and birds.
|
| 28. | Seesawing, the second courtship display, involves repetitively alternating lowering and raising the head and tail.
|
| 29. | These flashes from the wings may attract several males that engage in aerial courtship displays.
|
| 30. | During breeding season males perform courtship displays such as horizontal figure eights around the nest.
|
