Hello Claudia,

Thank you for contacting OSU Extension Service.

Crows are one of our common city/town wildlife companions and can be tricky to deal with. Given that you live in a town with adjacent homes, your options are more limited than if you were living in a rural area.

Several resources of information are available to consult, such as this peer reviewed wildlife management page on managing Crows: https://icwdm.org/species/birds/crows/. If you or your neighbors feed other birds, then you might find this article from OSU Extension Wildlife Specialist, Dana Sanchez, helpful: https://extension.oregonstate.edu/ask-expert/featured/how-can-i-keep-crows-jays-being-hogs.

If you want outside assistance, you might reach out to a licenced wildlife control professional. The Oregon Department of Fish and Wildlife maintains a list of licenced professionals at their website: https://www.dfw.state.or.us/wildlife/license_permits_apps/wildlife_control_operator_contacts.asp. While crows aren't listed next to the operators listed on this website, ask when you call to see if they have any experience with nuisance crows. 
When it comes to crows, here is some information about crow behavior and several options that you can consider doing on your own:

Consider the habitat around your home, specifically the conditions related to food and roost sites, as well as time of year when assessing your options for dealing with nuisance crows. 

Starting with time of year, crows are more concentrated in towns and cities during the winter, and when spring arrives, they begin to disperse. Towns and cities offer good roosting sites and available cover (conifer trees and mature cottonwoods, for example) that provide protection from the elements (snow, rain, wind). Also, our towns and cities tend to be warmer than the countryside due to the amount of roofs, streets and parking lots that hold and radiate heat during the evenings and overnight, the time when crows roost. As annoying as this is now, it is good to keep in mind that this is very likely to be a temporary nuisance for you that may be possible to wait out.

Besides warmer temperatures and roosting sites, food is another reason crows, like any wildlife species, can show up and decide to stay. Food sources include bird feeders, garbage cans/bags set out for pick-up day or in public areas in front of stores or restaurants, and wild sources (roadkill, bird eggs in nests). While you can do very little about wild food sources, you can change whether or not you feed wild birds and when and how you put out garbage for pick-up. Making food harder to access by putting garbage in tightly closing bins and not on the curb, and waiting until just before the garbage truck arrives can reduce the chances of crows gain access to tempting table scraps, etc. If you know your neighbors and can discuss together how you might limit food availability, that would be one place to start, especially if you are already following these steps.

Regarding habitat, you have limited options, especially when it comes to roosts. As already mentioned, crows congregate in the evenings, where they roost in tall trees with large branches. To cut down such trees is likely to be a drastic step to prevent crows from sticking around. 

In the meantime, when the crows are around, options to discourage them from being in your yard amount to scare tactics, such as loud noises (propane cannons and other loud noise making devices), which may not be compatible in town or well received by neighbors. If not deployed correctly, crows may begin to ignore noises if they don't perceive them as being a threat. Another noise tactic is to play recordings of crows in distress, which sends the message that it is not safe to come near. This technique has been found to be very effective, especially for preventing roosting and if deployed right before roosting begins. Another scare tactic is hanging reflective objects like strips of mylar tape (the material balloons are made of) or aluminum pie plates in a tree or on your eaves. An item that is available at many garden centers or online is a large balloon with a large red, white and black eye painted on it called a "predator eye balloon", which can also be hung in a tree or off an eave. The predator eye balloon is meant to mimic a predator, such as an owl. As with noises, crows can become habituated to these visual scare tactics. 

I hope some of this information is useful for you and gives you some options to try to limit the nuisance of the crows in your yard.

Thank you again for contacting OSU Extension Service.