The Persians also built elaborate structures for birds. Bird dropping might make a mess of elegant architecture, but the bird towers in Iran served to collect

The Persians also built elaborate structures for birds. Bird dropping might make a mess of elegant architecture, but the bird towers in Iran served to collect the valuable fertilizer they left behind. Very clever. https://itto.org/iran/attraction/dovecotes-pigeon-tower-isfahan https://itto.org/iran/attraction/dovecotes-pigeon-tower-isfa... https://themindcircle.com/mardavij-pigeon-tower/ https://themindcircle.com/mardavij-pigeon-tower/ https://www.tehrantimes.com/news/450802/Pigeon-towers-significant-but-strange-buildings-of-ancient-times https://www.tehrantimes.com/news/450802/Pigeon-towers-signif... .