New tenants

Tuesday 23rd May 2017 (1732)

I was in the lounge and heard a lot of buzzing. On investigation I discovered that my bird box has some new tenants. There were a lot of bees inside the hole and a lot more flying around. It is in a shaded area and I was struggling to get a sharp picture whilst keeping my distance. 

Anyone know anything about bees? Will they leave at some point or will they have taken over completely?  

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Thoughts and prayers for all those affected by the attack in Manchester. So sad.