I'd like to put a bird house (below) into my backgarden tree but am not sure what's the best way to do it. I've read opinions that affixing a birdhouse by hammering nails into it & into the tree might harm the three, as would tying rope around it (tight enough to hold the weight of the birdhouse).

Thus wrapping the birdhouse around the trunk or nailing it do not seem like good ideas. What else can I try? I could try hanging it from the tree but I don't know how stable that would be: the birdhouse that I bought does not have any addons to ease its attachment to the tree.

enter image description here

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    use a stainless eyelet screw. both your linked articles conclude that it's not likely to cause considerable harm. A loose rope loop on a branch lets you hang it. You can hang a weight on a rope under the birdhouse to stabilize it if needed. – dandavis Jun 27 at 22:58
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    Nailing into the tree /rope around the tree might harm the tree..... Where are you reading this? A tree huggers website? I don't see how tieing a rope around a tree will hurt it, have you ever seen tree roots lift up a cement sidewalk? Nothing stops it. Screws/nails have been used for MANY years to secure tree houses, I think you will be fine with 2 or so nails.... The tree will continue to grow. – Gunner Jun 27 at 23:34
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    @Gunner I love huggin me some tree's. Some may think it is sappy but not if you take precautions. If it weren't for tree's and their cousins the human virus would not be able to thrive as it does on this rock in space. ( no trees were harmed in the formulation of this retort ) More then likely The trees will continue to grow long after humans are gone. – Alaska Man Jun 28 at 1:40

I work in a lumber mill, we see all kinds of things in trees wire and rope do affect the tree the best thing would to use an eye bolt / screw. Drill a pilot hole for the screw and screw it in. This will affect the Cambric layer the least. The wood inside is not the active living part of the tree it is the outside layer. Putting wire or straps around can affect the sap movement and thus the health of the tree but drilling a small hole will not affect it much at all.
Edit: when I read the comments about top and straps I was thinking a hanging feeder like I have with a steel cable holding it up. Our bird houses are very similar and a small lag bolt at top and bottom ~2-1/2 long hold our houses to trees and posts of our riding arena, our birds come back every year and really help with the flys

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  • Thanks a lot for your answer! Not sure if this particular birdhouse is shaped well for being hanged with eyelet screws - have updated my question with a picture of it – z8080 Jun 29 at 19:21
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    I was thinking of more of a feeder we have that same kind we used 2 small lag bolts, at first just 1 on top but I did not want it tight enough to hurt the tree, but added a second to stabilize it they were not very big but 2-1/2” long. I pre drilled the holes as not to damage the bark and the house doesn’t sway with the wind actually we have about a 1/2 dozen the small birds that come back every year help eat the flys on our farm. – Ed Beal Jun 29 at 20:29

One way is to place 2*1 around the branch or trunk then secure those with 2” webbing straps. Seen this used on trees where those climbing or aerial runways are used.

Works for platforms, securing cables etc so should hold a bird cage.

Not 2*1 but shows exactly what I explained: enter image description here

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    a strong strap can girdle the tree. a weak strap can abrade the bark and allow infestation or capillary damage. – dandavis Jun 27 at 23:00
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    @dandavis the strap is not in contact with the bark... the strap is only used to hold the number of 2*1 in place... which provide the anchorage for mounting whatever. I will find an image so more understand. – Solar Mike Jun 27 at 23:09

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