GWBird computes the response and sensitivity of a network of detectors to a stochastic gravitational wave background (SGWB). It computes overlap reduction functions, power-law integrated sensitivity curves, angular response functions, and angular power-law integrated sensitivity curves, and supports the full range of gravitational wave polarization modes (tensor, scalar, and vector), enabling characterization of both isotropic and anisotropic SGWB components for all the polarizations. GWBird includes functions for circular polarization characterization and provides a versatile framework for SGWB analysis.