The conservationist also says that it is high time that humans decide how to adopt because cutting down the trees is a reactionary measure which is not helpful.
"The birds could go but how long will it take for the tree to grow? Birds are doing their natural way of living, does it mean we will cut all trees in Nairobi because of birds," the expert posed.
According to Gatheru, the County should be clear about how the trees will be replaced and that there should be an agreed percentage of the trees which is agreed upon in the city.
This is the case at Sunken Parking along Aga-Khan walk where motorists avoid parking their vehicles under the trees.
Last year city residents on various platforms were up in arms after the county chopped off palm trees on the canopies.
The palm trees dot some areas of the Central Business District including Moi Avenue, Ronald Ngala, and Kenyatta Avenue.
This was after motorists complained that falling branches from the trees damaged their vehicles.
Andrew Omondi, who leads a group of parking attendants along Moi Avenue, said that he had counted more than six vehicles whose windscreens were damaged by branches falling from the palm trees.
"That is why we raised the issue with the authorities after noting how motorists were avoiding the area fearing that branches will damage their vehicles," explained Omondi.