The Arctic Network Inventory and Monitoring program (ARCN) encompasses five park units including Gates of the Arctic National Park and Preserve (GAAR) and Noatak National Preserve (NOAT). The landbirds assemblage (passerines, near-passerines, raptors and galliformes) was chosen by the ARCN for long-term monitoring because it includes many species that spend the majority of their lives in terrestrial environments. Specific objectives of the ARCN landbird monitoring program are to: 1) determine annual longterm trends in density and frequency of occurrence of 5-10 of the most commonly detected...