I have selected three sites in the Fort St. James, BC area for observation. I’ve been a volunteer bander with Rocky Point Bird Observatory’s Hummingbird Project of BC for six years. Currently, I monitor three sites and have observed differences in both hummingbird species’ composition and abundance between sites. All three sites are in the dry sub-boreal spruce biogeoclimatic zone of the Nechako Plateau, which is classified as having a warm, humid continental climate. Summers are short and hot, with highs exceeding 30° C. Winters are long and cold, with lows occasional reaching below -40° C.
Site 1 is Cinnabar Research Station. Cinnabar Research Station is located on the south side of Tezzeron Lake, within the boundaries of the John Prince Research Forest. The banding site is on a north-facing slope, halfway between the forest edge and the lake shore. The forest is a mature mix of Douglas and subalpine fir, spruce, pine, trembling aspen, black cottonwood and paper birch. The understory is composed primarily of willows, rose, soopallie, cranberry, thimbleberry, red osier dogwood, black twinberry, devil’s club, huckleberry, and fireweed.
Site 2 is Cassiar Ranch. The Cassiar Ranch site is located on 160 acres of mixed pasture and aspen, pine dominated forest, sitting slightly higher than the surrounding landscape. Two seasonal streams traverse the property and there is also a man-made pond within a 10 acre fenced livestock area. One unique habitat feature of this site is a naturally occurring mineral lick, which falls outside the fenced livestock area and is heavily frequented by wildlife. The day I visited, I observed bear, moose, elk, deer, wolf, coyote, small mammal and bird tracks.
Site 3 is a Private Residence. The Private Residence is located in a subdivision on the south shore of Stuart Lake. The subdivision is a collection of around twenty lots, varying in size from 3-8 acres. The residence where I band is a 5-acre, cleared site. It is bordered on the north side by a two-lane dirt road, on the west and east sides by a sparse barrier of pine and aspen; is open to the southern lot.
- What does past years’ data show re: hummingbird species composition and abundance at these sites; are they different?
- What is the elevation at each site, how might that influence species composition?
- Is tree density impacting species abundance?
