This video shows a nuthatch using mud to make the entrance to its nest the right size.
It makes the entrance smaller, so that it itself will still be able to go inside, but bigger unwelcome intruders won’t.
The video was made by Kees van Boekel, in nature reserve De Leemput, Etten-Leur, the Netherlands.
Related articles
- Nuthatch, treecreeper, redstart (dearkitty1.wordpress.com)
- Red-breasted Nuthatch (aeoaviary.wordpress.com)
- Pygmy Nuthatch (paulrrulon.wordpress.com)
- From the Caravan Hide (parrotletsuk.typepad.com)
- Oldest osprey ‘Lady’ lays more eggs (dearkitty1.wordpress.com)
- Squirrel squats in owl’s nestbox (dearkitty1.wordpress.com)
- Two sea eaglets born in the Netherlands (dearkitty1.wordpress.com)
- Botanical garden birds and plants (dearkitty1.wordpress.com)
- Snow’s almost gone (abewoods.wordpress.com)
Dear Kitty. Some blog 
Pingback: Nuthatch, treecreeper, redstart | Dear Kitty. Some blog
Pingback: Nuthatches squat woodpecker’s nest | Dear Kitty. Some blog
Pingback: Nuthatches, butterfly and mushrooms | Dear Kitty. Some blog
Pingback: Nuthatch eating peanut, video | Dear Kitty. Some blog
Pingback: Redwing, jay, great spotted woodpecker | Dear Kitty. Some blog
Pingback: Flowers, nuthatch, treecreeper at the cemetery | Dear Kitty. Some blog
Pingback: Flowers, birds and butterflies at the cemetery | Dear Kitty. Some blog
Pingback: Robing singing, butterfly flying at cemetery | Dear Kitty. Some blog
Pingback: Record ten eggs for Dutch nuthatch | Dear Kitty. Some blog
Pingback: Birds at British embassy in Greece | Dear Kitty. Some blog