Several members of the corvid family are common throughout San Mateo County, these include the American crow (Corvus Brachyrhynchos) and the common raven (Corvus corax). Crows and ravens are both large birds with shiny black feathers. However, with close observation they can be easily distinguished.
Ravens are larger and have a heavier beak, and their feathers look shaggy, especially around their throats. Ravens usually live alone or in pairs, and make a variety of croaking calls.
Crows are smaller and slimmer, with smooth feathers. They often live in large family groups, and make cawing noises.
Both crows and ravens will raid open compost and garbage bins if given the chance. Crows may also create a nuisance by congregating or roosting in large groups, where their droppings may deface or damage vehicles and structures.
The District does not provide bird abatement services. However, most problems with crows and ravens can be solved by limiting their access to food sources and/or eliminating their roosting areas. You may also find this information from the Washington Department of Fish and Wildlife helpful.
Crows, ravens, and other related species play an important role in the West Nile virus transmission cycle. More information can be found here.
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Website Accesibilty Policy San Mateo County Mosquito and Vector Control District
San Mateo County Mosquito and Vector Control District is fully committed to providing accessible facilities, elements and
channels of communication to all members of the public. As part of this commitment, San Mateo County Mosquito and Vector Control District
has a policy of providing an accessible website compatible with the Web Content Accessibility Guidelines (WCAG 2.1) and
commercial screen reading software. All features of the website are coded to allow individuals with vision and
other impairments to understand and use the website to the same degree as someone without disabilities. We welcome
feedback and can often resolve issues in a timely manner if they arise.
If you need any special assistance or accommodations
San Mateo County Mosquito and Vector Control District has designated a compliance officer for website disability-related accommodations.
The compliance officer has received training in website accessibility and updates the site in accordance with those best
practices. Contact our accessibility officer to report an issue.
Compliance Procedures and Reports
In addition to testing with users with a wide range of disabilities and coding our website to WCAG standards,
San Mateo County Mosquito and Vector Control District regularly scans its website to ensure ongoing compliance, and makes timely
changes to any inaccessible changes, if any are found. In our ongoing commitment to transparency, we make the
last three months' reports available to the public.
August 2021 Website Accessibility Compliance Report
July 2021 Website Accessibility Compliance Report
June 2021 Website Accessibility Compliance Report
Linked Documents and Third Parties
Please note that this site may link out to third-party websites, such as state or federal agencies, that do
not have accessible content. This site may also include documents provided by third parties included in our
agenda packets, for example. While we cannot control the accessibility of content provided by third parties,
we are happy to assist any member of the public with reading and accessing content on our site.