urban development and the associated excessive noise or disturbance can result in habitat loss and indirect adverse effects (BLM 2005). Table 1. Habitat Associations for Burrowing Owl Land Cover Land Cover Habitat Habitat Supporting Type Use Designation Parameters Information Herbaceous Nesting, Primary Burrows The presence of nest dominated shelter, mostly dug by burrows, dug by refugia other animals fossorial mammals including the such as ground California squirrels, seems to be ground a critical requirement squirrel for burrowing owls. Typically forage in habitats characterized by low-growing vegetation (Haug et al. 1993). Often use unlined earthen banks along agricultural ditches (Haug et al. 1993) Agricultural Nesting, Secondary See above See above shelter, refugia Ruderal Nesting, Secondary See above See above; may use shelter, urban levees if refugia suitable burrows are available (Haug et al. 1993) Nesting, Secondary See above See may use shelter, urban levees if refugia suitable burrows are available (Haug et al. 1993) Rural Nesting, Secondary See above See above; may use residential shelter, urban levees if refugia suitable burrows are available (Haug et al. 1993)
urban development and the associated excessive noise or disturbance can result in habitat loss and indirect adverse effects (BLM 2005). Table 1. Habitat Associations for Burrowing Owl Land Cover Type Land Cover Use Habitat Designation Habitat Parameters Supporting Information Herbaceous dominated Nesting, shelter, refugia Primary Burrows mostly dug by other animals including the California ground squirrel The presence of nest burrows, dug by fossorial mammals such as ground squirrels, seems to be a critical requirement for burrowing owls. Typically forage in habitats characterized by low-growing vegetation (Haug et al. 1993). Often use unlined earthen banks along agricultural ditches (Haug et al. 1993) Agricultural Nesting, shelter, refugia Secondary See above See above Ruderal Nesting, shelter, refugia Secondary See above See above; may use urban levees if suitable burrows are available (Haug et al. 1993) Nesting, shelter, refugia Secondary See above See may use urban levees if suitable burrows are available (Haug et al. 1993) Rural residential Nesting, shelter, refugia Secondary See above See above; may use urban levees if suitable burrows are available (Haug et al. 1993)
Burrowing_Owl_DRECP.docx