An old nestbox on an oak

An old and worn nest box for birds on an oak. Spider web in front of the entrence. Few natural tree cavities make nest boxes the only solution for many wild birds.

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Keywords:

• Europe
• Hakan Karlsson
• Scania
• Sweden
• aged
• apartment
• biodiversity
• biological
• biology
• biosphere
• bird boxes
• bird-home
• birdhouses
• cavities
• cavity
• diverseness
• diversity
• ecology
• ecosystem
• environment
• forest
• green
• habitat
• hardwood
• hideout
• home
• lifestyle
• living quarters
• nature
• nature conservation
• nest box
• nest-box
• nestbox
• oak
• old
• quercus robur
• residence
• sustaining biodiversity
• tree
• trunk
• variation
• vertical
• wood
• worn

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