A new study says that when male blue-footed boobies take a yearlong break from sex, they get a brighter shade of blue in their feet the following year, which makes them more attractive to females.
A new study says that when male blue-footed boobies take a yearlong break from sex, they get a brighter shade of blue in their feet the following year, which makes them more attractive to females.
Blue-footed boobies are best known for their bright blue webbed feet, which the males prominently display in courtship dance to attract females, reports The National Geographic News.A new study shows that while attractiveness of the blue feet diminishes with age in males that reproduce each year, if males skip a breeding season and don't mate, they displayed a more attractive foot colour and had more green chroma.
Breeding for these tropical seabirds involves more than just the mating itself.
Boobies have a long period of biparental care, i.e., the males are active participants in raising their young. The eggs are incubated for 45 days, and chicks stay with their parents for a four-month rearing period.
Researchers from University of Vigo in Spain,and the National Autonomous University of Mexico studied more than a hundred male blue-footed boobies over a total of six months in 2004 and 2005 on Mexicos Isla Isabel, and measured their green chroma using a spectrophotometer.
They concluded that its likely the sabbaticals from reproducing offspring may allow the male boobies to physically recover and display brighter feet in their quest of finding a mate.
The study has been published in The Royal Society's Biology Letters.
Source-ANI
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