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Drones used to cover eggs in crow nests with oil to stop their population increase



Crow populations are literally exploding throughout the American West and this is due in particular to the fact that these birds exploit human waste as a food resource very well. They are expanding in many territories and this can mean only one thing: a serious threat to the species that these birds prey on and to the entire lower food chain.

An example is represented by the desert tortoise: the young of this species, whose shell is still tender and young, which can be more easily torn by the beak of a crow, represent one of the crows’ favorite dishes and the increase in the population of the latter is helping to accelerate their extinction.

But now the institutions of some regions are turning to counterattack using an unconventional weapon: covering the eggs in crows’ nests with silicone oil to counteract the very strong increase in their population.

In this regard, they use guided drones that pour into the nests of these birds the sticky substance which, once stratified, prevents the oxygen from entering the shells and suffocates the crow babies before they are born. For the moment it seems the most effective solution, even if the cruelest, but those adopted previously did not give any result. For example, the army has already tried to repel crows with laser guns but the latter have proved too dangerous for the civilian population. Techno-turtles were then built, that is reproductions of turtles similar to the species in danger of extinction, covered with irritating substances derived from grape juice, very indigestible to crows, but even this solution proved to be inadequate.

It was then attempted to directly attack the eggs by covering them with oil but it was then understood that such an action to be effective must necessarily be carried out by drones. Meanwhile, the crows are multiplying out of all proportion so much that since 1990 the number of turtles in the Mojave desert has collapsed by over 90% and the main responsibility is to be charged to the predation put in place by the crows, whose populations are growing at the rate of 2.5% per year.

Bella Allen

I am based in Alabama and have worked as a journalist for most of my professional life, having been an editor for Alabama Magazine ( and Alabama Press Association ( I am a volunteer contributor for Bitobit News and assist with editing and proofreading as well as submitting content from time to time.

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Bella Allen
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