Figure 1. Northward movement of bar-headed geese in relation to HPAI H5N1 outbreaks in the Central Asian Flyway, 2005–2010.

Paths of bar-headed geese are indicated in purple, with outbreaks from poultry (red squares) and wild birds (yellow triangles). Poultry density (individuals/km²) in the Central Asian Flyway ranges from high (10,000–100,000: dark red), medium (1,000–10,000: orange), low (1–1,000: brown) and absent (grey).