A NEST PREDATOR'S VIEW OF A MANAGED FOREST: GRAY JAY (PERISOREUS CANADENSIS) MOVEMENT PATTERNS IN RESPONSE TO FOREST EDGES

摘要: Abstract High nest-predation risk is often associated with forest edges. Most nest predators in boreal coniferous forests of North America are specialists living mature stands. Nest have been studied mainly through use artificial nests; knowledge their behavior remains limited. We used radiotelemetry to examine movement patterns, relative edge, a predator, the Gray Jay (Perisoreus canadensis), forest. Each 11 family groups Jays monitored early summer exhibited marked association were found within 30 m edges more than expected from random Furthermore, jays traveled slowly near interior. Because apparently represent prime foraging habitat for Jays, narrow strips left by logging could act as ecological traps mature-stand songbirds before stands regenerate adjacent clearcuts.