Students from the Piet Zwart Institute in Rotterdam designed “brick biotopes,” made from plaster and sand, which serve dual functions:  1) as bricks, and 2) as a home for house sparrows, which often nest in cracks. During the past 20 or so years, sparrow populations have declined in many European urban environments. The hand-crafted bricks’ design allows plants and wildlife to “co-exist with architecture.” This video shows how they’re made. (via Brick Biotopes at Milan Design Week | Design Milk)
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Students from the Piet Zwart Institute in Rotterdam designed “brick biotopes,” made from plaster and sand, which serve dual functions: 

1) as bricks, and 2) as a home for house sparrows, which often nest in cracks.

During the past 20 or so years, sparrow populations have declined in many European urban environments. The hand-crafted bricks’ design allows plants and wildlife to “co-exist with architecture.”

This video shows how they’re made.

(via Brick Biotopes at Milan Design Week | Design Milk)

Source: design-milk.com