In Sweden, a pilot programme was led by a startup “Corvid Cleanig” corvid (type of crow from crow family) in 2022. Crows were enrolled to pick up cigarette butts from the streets of Södertälje (near Stockholm).  The corvids are often considered the most intelligent birds and are among the most intelligent animals in general.  For each cigarette filter a crow drops into a customised vending machine, the bird receives food in reward. The company says the birds are not trapped but participate voluntarily. The startup team and researchers drew conclusions on the corvid family’s well-documented intelligence and capacity for tool-use and problem-solving. “They are wild birds taking part on a voluntary basis,” says Christian Günther-Hanssen, the founder of Corvid Cleaning, the company behind the process.

Cigarette filters are a major part of urban litter in Sweden accounting for around 60 % of items in trash counts on roads, and the project aims to reduce municipal street-cleaning costs while engaging wildlife in a novel way. The initiative is still at pilot stage; questions remain over expandability and scalability. As a progressive nation, the bird welfare by ministry is also a point of strict adherence as cruelty against wildlife. The government of Sweden is also worried about human behaviour, whether this practice will shifts focus away from changing human behaviour. Data collected from Günther-Hanssen, C. and researchers  for using wild crows to collect cigarette butt waste in Sweden is published in Journal of Environmental Innovation.  

Cigarette butts are harmful items.  They have nicotine, tar, microplastics, and heavy metals inside of them. They are highly contaminated in nature. The environmentalists fear the consequences  during high rainfall and floods. The founder of the vending box says the crows are very intelligent they don’t eat the filters; they simply carry them in their purpose to get a peanut.

Conclusion

This is a wrong way of human beings asking another species to help us overcome our weaknesses. We are asking for help from the crows. We are the most ill-mannered species that can’t quit our habits and we cooly forget to throw the trash in dustbins. While smoking we forget to think about the consequences of it every step of the addiction. When we throw trash on roads, we forget what we leave behind as we continue to walk forward and into our own lives. But we are the species capable of building a machine that imagines partnerships across evolutionary boundaries. While humans do utilize animals for a variety of tasks such as agriculture, transport, and assistance roles, for medical inventions many people hold diverse views on these relationships. The extent to which animals are used varies widely across cultures and industries, and this practice has evolved significantly throughout history.  

Crows are called intelligent birds due to their advanced problem-solving, tool use, and impressive memory capabilities. They can recognize faces, plan, and exhibit complex social behaviours like cooperation and communication, which is why they are considered among the smartest animals on the planet. Crows have exceptional memories and can remember specific human faces for years after a single encounter. They can even hold grudges, sometimes passing down their negative reactions to people who have hurt them. Crows are so smart due to their dense neuron packing in their brains, which gives them high cognitive abilities despite not having a prefrontal cortex like humans. Crows score an average of 100 with a standard deviance of 15 points in IQ tests.

In our so-called modern societies, we hold many ethical discussions, movements, and laws dedicated to animal welfare, which focus on ensuring animals are treated compassionately.  The conversation around human-animal interactions is complex, spanning historical necessity, cultural practices, and contemporary ethics regarding awareness and animal rights

The wild birds carry out the task as they receive a little food for every butt that they deposit in a commissioned machine. The Keep Sweden Tidy Foundation says that more than 1bn cigarette butts are left on Sweden’s streets each year, representing 62% of all litter. Günther-Hanssen the founder of Corvid Cleaning estimates his method could save at least 75% of costs involved with picking up cigarette butts in the city. The use of animals in psychological research is a complex issue with arguments both for and against it.