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Report: Western Screech-Owl Monitoring and Habitat Restoration in the Campbell River Watershed - Year 2 COA-F23-W-3742

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Since the mid 1940s the Campbell River (CR) watershed has been subjected to severe ecological disturbances including forest clearing, mining, and hydro-damming activities. As nearby communities grew, demand for energy infrastructure increased concurrently.
Author:  Madrone Environmental Services Ltd.
Old Reference Number:  COA-F23-W-3742
Old Reference System:  FWCP - Fish Wildlife Compensation Program Coastal
Date Published:  Nov 2022
Report ID:  61171
Audience:  Government and Public
The construction of John Hart, Ladore, and Strathcona dams resulted in diversion of natural watercourses to increase water supply. In doing so, over 50 km2 of riparian areas were destroyed and/or altered due to flooding of surrounding shrublands and forests. The Western screech-owl (Megascops kennicottii kennicottii; hereafter screech-owl or WESOke), is sensitive to loss of riparian areas since they nest in cavities of trees that are adjacent to ponds, wetlands, river, and lakes. Common prey species (e.g., insects, amphibians, and small rodents) are riparian-dependent and likewise are negatively impacted by habitat loss. In addition, colonization of Barred owls (Strix varia), a known screech-owl competitor and predator, are likely displacing screech-owls from high quality riparian habitats (MOE 2013). Provincially, population trends are declining (MOE 2013), which has resulted in a federal status of Threatened (COSEWIC 2021) and a provincial status of Special Concern (BC Conservation Data Centre 2021). As such, WESOke has been listed as a Schedule 1 Threatened Species at Risk (SAR). Therefore, implementing conservation measures for screech-owls is important.
Report Type
  Terrestrial Information
 
Subject
  Birds - Western Screech-Owl: Otus kennicottii
  Region - Vancouver Island
  Terrestrial Information - Restoration
 


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