Featured Research

from universities, journals, and other organizations

Sex In The Morning Or In The Evening?

Date:
May 28, 2007
Source:
Stockholm University
Summary:
Hens solicit sex in the morning to avoid sexual harassment in male-dominated groups of chickens, shown in a new study. In the animal kingdom, males more often than females can increase their reproductive success by being promiscuous. This in turn can result in males imposing high numbers of copulation attempts and sexual harassment on females.

Rooster and hen.
Credit: Hanne Løvlie

Hens solicit sex in the morning to avoid sexual harassment in male-dominated groups of chickens, shown in a new study by Hanne Løvlie of Stockholm University, Sweden, and Dr Tommaso Pizzari of the University of Oxford, UK.

In the animal kingdom, males more often than females can increase their reproductive success by being promiscuous. This in turn can result in males imposing high numbers of copulation attempts and sexual harassment on females.

In the promiscuous feral chicken, males initiate more than 90 per cents of all copulation attempts; most of them in the evening after hens have laid their eggs and are most fertile. In female-dominated groups hens are also interested in sex in evenings. However, as shown in a new study published in American Naturalist, in male-dominated groups hens rather initiate sex in mornings.

‘Sexual harassment in evenings in male-dominated groups may just be too much for the hens’, says Hanne Løvlie from Stockholm University, one of the researchers of the study. ‘Hens were exposed to more intense sexual harassment in male-dominated group. By initiating sex in mornings when the cockerels are less amorous and the free-ranging chickens also are more spread out foraging, hens may avoid the intense sexual harassment in evenings.’

The study shows that changes in the intensity of sexual harassment trigger a plasticity in the hens’ sexual behaviour not before shown. A plasticity that in turn may enable hens to mate without suffering sexual harassment.

‘The sexes therefore not only fall out on how much sex they want, but also when at day to have it’, says Hanne Løvlie.


Story Source:

The above story is based on materials provided by Stockholm University. Note: Materials may be edited for content and length.


Cite This Page:

Stockholm University. "Sex In The Morning Or In The Evening?." ScienceDaily. ScienceDaily, 28 May 2007. <www.sciencedaily.com/releases/2007/05/070527200437.htm>.
Stockholm University. (2007, May 28). Sex In The Morning Or In The Evening?. ScienceDaily. Retrieved September 3, 2014 from www.sciencedaily.com/releases/2007/05/070527200437.htm
Stockholm University. "Sex In The Morning Or In The Evening?." ScienceDaily. www.sciencedaily.com/releases/2007/05/070527200437.htm (accessed September 3, 2014).

Share This



More Plants & Animals News

Wednesday, September 3, 2014

Featured Research

from universities, journals, and other organizations


Featured Videos

from AP, Reuters, AFP, and other news services

Snack Attack: Study Says Action Movies Make You Snack More

Snack Attack: Study Says Action Movies Make You Snack More

Newsy (Sep. 2, 2014) — You're more likely to gain weight while watching action flicks than you are watching other types of programming, says a new study published in JAMA. Video provided by Newsy
Powered by NewsLook.com
Get A Mortgage, Receive A Cat — Only In Russia

Get A Mortgage, Receive A Cat — Only In Russia

Newsy (Sep. 2, 2014) — The incentive is in keeping with a Russian superstition that it's good luck for a cat to be the first to cross the threshold of a new home. Video provided by Newsy
Powered by NewsLook.com
U.N. Says Ebola Travel Restrictions Will Cause Food Shortage

U.N. Says Ebola Travel Restrictions Will Cause Food Shortage

Newsy (Sep. 2, 2014) — The U.N. says the problem is two-fold — quarantine zones and travel restrictions are limiting the movement of both people and food. Video provided by Newsy
Powered by NewsLook.com
Sharks Off the Menu and on the Tourist Trail in Palau

Sharks Off the Menu and on the Tourist Trail in Palau

AFP (Sep. 2, 2014) — Tourists in Palau clamour to dive with sharks thanks to a pioneering conservation initiative -- as the island nation plans to completely ban commercial fishing in its vast ocean territory. 01:15 Video provided by AFP
Powered by NewsLook.com

Search ScienceDaily

Number of stories in archives: 140,361

Find with keyword(s):
 
Enter a keyword or phrase to search ScienceDaily for related topics and research stories.

Save/Print:
Share:  

Breaking News:
from the past week

In Other News

... from NewsDaily.com

Science News

Health News

Environment News

Technology News



Save/Print:
Share:  

Free Subscriptions


Get the latest science news with ScienceDaily's free email newsletters, updated daily and weekly. Or view hourly updated newsfeeds in your RSS reader:

Get Social & Mobile


Keep up to date with the latest news from ScienceDaily via social networks and mobile apps:

Have Feedback?


Tell us what you think of ScienceDaily -- we welcome both positive and negative comments. Have any problems using the site? Questions?
Mobile iPhone Android Web
Follow Facebook Twitter Google+
Subscribe RSS Feeds Email Newsletters
Latest Headlines Health & Medicine Mind & Brain Space & Time Matter & Energy Computers & Math Plants & Animals Earth & Climate Fossils & Ruins