Science tits

A British enthusiasm for feeding birds may have caused UK great tits to have evolved longer beaks than their European counterparts, according to new research. The findings, published in Scienceidentify for the first time the genetic differences between UK and Dutch great tits which researchers were then able to link to longer beaks in UK birds. Using genetic and historical data, the research team also found that the differences in beak length had occurred within a relatively short time frame.

This website uses cookies for user login, personalised content and statistics. By continuing to browse the site, you are agreeing to our use of cookies - if you wish to opt-out of non-essential cookies, you may do so below. In research published in Sciencea team from the Netherlands Institute of Ecology and the universities of Wageningen, Oxford, Exeter, East Anglia, and Sheffield outline the evidence for this case of evolution in action. However, by bringing together ongoing projects of many different research institutions, the team of scientists lead by Mirte Bosse and Lewis Spurgin have managed to cover all the bases.

Researchers at University of Lodz investigated the difference in blue tit egg size and how many eggs were laid per clutch in an urban parkland and a forest environment ten kilometres apart. They found that in the urban environment, tits laid bigger but fewer eggs, while tits in the forest laid smaller and rounder, but more eggs. Professor Jerzy Banbura, corresponding author of the study, said: "There is a certain difference in egg volume that you would expect from a trade-off with clutch size, which means there are either bigger eggs but fewer eggs in a clutch, or a greater number of smaller eggs, depending on the resources available to the birds.

Much has been said about Bird Boxthe horror movie starring Sandra Bullock and Trevante Rhodes about unseen demonic forces that drive people to commit suicide. Though the film never shows the monsters responsible for the armageddon, we know from anecdotes what the thing would have looked like. But, and go with me here, what if the thing was actually the birds?

After a long, cold winter, nothing says spring like the hopeful songs and dances of horny male birds looking for mates. Throughout Europe and western Asia, the blue tit is one of the most colorful birds to engage in this annual hormone-driven spectacle. The males bring their A game, flitting about, singing beautiful songs, and offering gifts, trying everything in their power to convince their potential mates they are the best man around. While blue tit males will do their best to impress females, the females still rely heavily on looks when making their decisions.

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