
Contact Valley Wildlife Care or your closest licensed wildlife rehabilitator. Ask them if they are treating the sick birds. Many rehabilitators have a euthanasia policy for West Nile Virus infected birds.
Symptoms of infected crows:
Since WNV causes swelling of the brain and attacks the nervous system, birds infected generally appear “confused” “disoriented” “weak on the legs" "inable to stand” “stumbling” or “leaning to one side”
Why Birds?
Wild birds are the animals from which the mosquito vector primarily acquires the virus. Infection has been reported in more than 100 bird species. Although many birds that are infected with WNV will not appear ill, WNV infection can cause serious illness and death in some birds. The most severe illnesses are seen the corvids, which include crows, jays, ravens, and magpies. American crows constitute the majority of birds reported dead due to WNV.
What To Do When You Find a Dead Bird
Contact LA County Vector Control ASAP http://www.glacvcd.org if they are no longer taking dead birds in your area, please dispose of it as follows:
(1) Wear plastic or latex gloves or use a plastic bag as a glove
(2) With your gloved hand, place or wrap the bird in a plastic bag and tie the bag securely (alternatively, a shovel may be used to pick up bird)
(3) Dispose of the bag (and gloves) in an outdoor trash receptacle, and
(4) Wash your hands with soap and water.
Do not be frightened when attempting to rescue a sick bird. They have not spread the virus to people, as far as we know. Precautions should be taken to avoid exposure to the feces or saliva, but don't let that stop you from rescuing the bird. It is a mosquito born virus and is carried by mosquitoes. Mosquitoes bite people, dogs, cats, and other pets. All of the above have immunity to the virus and only one in one hundred and fifty people who are infected will actually know! Crows have no immunity to the fight the virus which makes them the most recognized hosts. They can transmit the virus ONLY if a mosquito feeds off of them and on to another bird. This is why it’s so important to get them off the streets! This is where we come in. We help them by providing critical care in hopes that they will be able to fight the virus and pull through. Below is a picture of the cycle:

