Greenfinch territorial display

Although greenfinches have been calling with their long nasal note for some weeks now, I did not expect to see as yet, the territorial display with its distinctive call note. This really does suggest that the birds are becoming serious about breeding even though there is no cover whatsoever in the tall hedges that usually provide them with nest sites. The mild weather is clearly inducing them to breed but I fear that the consequences will be disastrous as their nests will be totally open to predation particularly by the numerous magpies that inhabit the area.