Over the past three weeks or so I have been watching a pair of magpies building their nest in a poplar tree near my garden. However, on a number of occasions each day, two crows move in (even going into the nest) and remain there for several minutes. There isn't a lot a squabbling, but the magpies slowly move back in and the crows fly away. I would like to know: Have others witnessed such events? Who may win in the end? If the magpies mate and then have their nest taken off them, what would happen?
I look forward to hearing any comments on this subject.
I am just watching this exact thing outside my window. The large black bird is twice the size of the magpie pair. Then a second large black bird came. Lots of aggressive flapping. Black birds got into the nest. Have gone away for the moment. Took a bit of film.
Hello Lucy C - I can see the original post is over 5 years old, but you have posted recently.
I have been off work for the past 2 weeks, and the nest at the bottom of my garden at the top of a huge pear tree has been used by a pair of magpies for at least the last couple of years. For the last 2 weeks, the returning (I assume) pair of magpies have been trying to rebuild this nest, being CONSTANTLY harassed by a pair of carrion crows. Although we often get magpies, we rarely see anything larger, so I had to look up to check what kind of birds they were (even suspected ravens for a short while as they seemed so big). Yesterday and today, I have only seen one of the magpies, so I am assuming the other is now in the nest. The crows continue to fly close to the nest, chase off the magpie, and follow it from tree to tree. There seems to be no let up from them - whenever I happen to look, I see the crows and the magpie(s). I have seen both the species with nesting material in their beaks over the fortnight, and wondered why they have put so much effort into fighting over this particular nest - it's been a long drawn out fight! Would the crows lay their own eggs with the magpies? I'm really interested in any explanations for this behaviour. Thanks
There is usually a magpie nest in the leylandii at the bottom of my neighbour's garden, and during the nest building period the local carrion crows appear and start a-feuding and a-fighting with the magpies. For the rest of the year they do not come anywhere near my garden and they do not seem to be interested in building a nest of their own - just in harassing the magpies. This saga is now at an end because my neighbour settled the matter this week by cutting the tree down!