JTweedie
Well-known member
Did anyone see the short segment about Blue and Great Tit clutch numbers showing a small decrease when they were getting food from feeders? One of the things that people learn about natural selection is that for the most part more young are born than can possibly survive.
So with that in mind, could another explanation be that with the birds having a guaranteed source of food that they can afford to have smaller clutches because they know that all (or most of them) will survive?
So with that in mind, could another explanation be that with the birds having a guaranteed source of food that they can afford to have smaller clutches because they know that all (or most of them) will survive?