The Wild Bird Fund is a non-profit animal hospital on the Upper West Side of Manhattan in New York City.

[3][4] It operated in McMahon's New York apartment for several years, and in a space inside a veterinary hospital, Animal General, on Columbus Avenue in Manhattan's Upper West Side.

[5][2][6] The rescue center opened its own dedicated facility across the street from Animal General on Columbus Avenue in the spring of 2012, though it still relies on neighborhood veterinarians for some specialized equipment or doctors.

[7] It is the city's only wild animal clinic, and may treat more than 400 birds at a time, with up to 50 coming in each day and 7,000 yearly patients as of 2020.

[11] Other ailments might be caused by lead in the environment, rodenticide, car or bicycle collisions,[3] discarded fishing line, and cat or dog attacks.

When injured birds are admitted, they are categorized according to the seriousness of their injuries, with some spending time in an open area that allows them to fly, some kept in cloth baskets with perches, and others placed in incubators.