by Annette J Beveridge
Spring is upon us. The sound of birds singing and the warmth of the sun is so welcome after the dark nights and the chilly winter months.
It may feel wonderful to us, but we do know that throughout springtime, birds start to build their nests in alignment with available food sources. This is typically around the same time of the year every year.
However, research by US scientists analysed nesting trends and used egg samples available in the Chicago area. It revealed that egg laying is now occurring almost a month earlier than at any time over the last century.