Productivity of the spruce grouse in fragmented habitat at the edge of its range
Journal of Field Ornithology
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Abstract
We measured productivity of the Spruce Grouse (Dendragapusc anadensicsa nadensis) in patchy black spruce (Picea mariana) habitat along the southeastern limit of its range in mid-coastal Maine. We captured grouse and attached necklace-mounted radio transmitters to hens prior to nesting. Of 19 females monitored, only 26% raised chicks to the late brood-rearing period. Predation was high on hens (37%) and five were killed before hatching eggs. Six (55%) entire broods were lost and only 30% of chicks survived to late summer. Production ( No. of chicks/female), an index of productivity, was < 1 and lower in Maine and Minnesota study areas in black spruce than areas dominated by jack pine (Pinus banksiana) or a mixture of jack pine and spruce with dense undergrowth. Where Spruce Grouse breed in patchy black spruce communities, immigration from neighboring populations or inter-patch movement by local individuals may be required to maintain viable populations.
Suggested Citation
Whitcomb, S., O'Connell, A., Servello, F.A., 1996, Productivity of the spruce grouse in fragmented habitat at the edge of its range: Journal of Field Ornithology, v. 67, no. 3, p. 422-427.
| Publication type | Article |
|---|---|
| Publication Subtype | Journal Article |
| Title | Productivity of the spruce grouse in fragmented habitat at the edge of its range |
| Series title | Journal of Field Ornithology |
| Volume | 67 |
| Issue | 3 |
| Year Published | 1996 |
| Language | English |
| Contributing office(s) | Patuxent Wildlife Research Center |
| Description | 422-427 |
| Larger Work Type | Article |
| Larger Work Subtype | Journal Article |
| Larger Work Title | Journal of Field Ornithology |
| First page | 422 |
| Last page | 427 |