Related Experiment Video
Updated: Aug 6, 2026
04:10
Visually Sexing Loggerhead Shrike (Lanius Ludovicianus) Using Plumage Coloration and Pattern
Published on: March 8, 2020
Summary
Female ornaments, often overlooked, are increasingly recognized as adaptive traits driven by sexual selection. Recent evidence suggests these ornaments evolve independently from male traits, influenced by female mate choice and competition.
Area of Science:
- Evolutionary biology
- Animal behavior
- Sexual selection
Background:
- Sexual selection primarily explains elaborate male ornaments.
- Female ornaments have historically received less attention and were often deemed nonadaptive.
- Recent research challenges these traditional views on female ornamentation.
Purpose of the Study:
- To investigate the evolutionary drivers of female ornaments.
- To explore the role of sexual selection in the development of female ornamentation.
- To assess whether female ornaments are adaptive traits.
Main Methods:
- Comparative analysis of existing evidence on ornaments in both sexes.
- Review of theoretical models predicting selection pressures on females.
- Examination of recent experimental studies on female ornamentation.
Main Results:
- Comparative data indicate female ornaments evolve independently of male showiness.
- Theoretical models support the occurrence of female mate choice and contest competition.
- Experimental studies corroborate the influence of selection acting on females.
Conclusions:
- Female ornaments are likely shaped by direct selection acting on females.
- Sexual selection, including mate choice and competition, is a significant evolutionary cause of female ornaments.
- Female ornaments represent an important, yet understudied, aspect of sexual selection.
Related Concept Videos
01:20Mate Choice
Mate choice—the decision about whom to mate with—is a type of natural selection, since animals must reproduce to pass down their genes. Mate choice is also called intersexual selection because the behavior occurs between the sexes.
01:06Fixed Action Patterns
A fixed action pattern (FAP) is a specific, hard-wired sequence of behaviors that occurs in response to an external stimulus, called a sign stimulus. The behavior is “fixed” because it is essentially unchangeable—proceeding similarly across individuals of a species every time it occurs.
00:55Parental Care
Many animals exhibit parental care behavior, including feeding, grooming, and protecting young offspring. Parental care is universal in mammals and birds, which often have young that are born relatively helpless. Several species of insects and fish, as well as some amphibians, also care for their young.
02:07Conservation of Declining Populations
Conservation of declining population focuses on ways of detecting, diagnosing, and halting a population decline. The approach uses methods to prevent populations from going extinct.
01:54Convergent Evolution
Evolution shapes the features of organisms over time, ensuring that they are suited for the environments in which they live. Sometimes, selection pressure leads to the rise of similar but unrelated adaptations in organisms with no recent common ancestors, a process known as convergent evolution.The structures that arise from convergent evolution are called analogous structures. They are similar in function even if they are dissimilar in structure. Further, structures can be analogous while also...
01:06Natural Selection and Mating Preferences
The principle of natural selection posits that organisms better adapted to their environment are more likely to survive and reproduce. This principle is closely intertwined with mating preferences, a key aspect of sexual selection, which evolutionary psychologists believe is driven by instincts to propagate one's genes. Such instincts significantly influence mating behaviors and preferences between genders.
Females, due to their biological roles in conception, pregnancy, and nursing, inherently...
Females, due to their biological roles in conception, pregnancy, and nursing, inherently...