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Wildlife Specialist report

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Hairy Woodpecker (Management Indicator Species Representative of Ponderosa<br />

Pine and Mixed Conifer Snag Component) - The Hairy Woodpecker is an indicator of<br />

high seral stage ponderosa pine and mixed conifer because the older age classes within<br />

these vegetation types provide snags and an abundance of insects. The Hairy<br />

Woodpecker uses tree cavities for roosting and winter cover. Overall, the woodpecker<br />

appears to be minimally impacted by forest fragmentation, although a few studies have<br />

<strong>report</strong>ed a decline in numbers as forest patch size decreases. The presence of suitable<br />

cavity trees is a more important consideration (Bushman and Therre, 1988). It nests in<br />

holes dug mostly by the male in live or dead trees or shrubs, at an average height of 29.5<br />

feet (9 meters) above ground. In most areas, it favors dying parts of live trees, especially<br />

where fungal heart rot has softened the heartwood. Limiting factors for the Hairy<br />

Woodpecker include predation and habitat modification. Snags (25cm or more in DBH)<br />

and an average of five snags/hectare are assumed optimal for woodpecker reproduction,<br />

but may not be adequate for foraging. With over 1,341,662 acres of ponderosa pine, and<br />

mixed conifer vegetation on the Gila National Forest, snag habitat is abundant for this<br />

species. Again the Hairy Woodpecker is the focal species for this group/guild of species.<br />

The analysis indicators for direct and disturbance effects are described above.<br />

Cavity Nester Summary:<br />

Table 63 list road associated and motorized trail/ORV factors related to cavity nester<br />

focal species that represent this group; analysis factors based on the analysis factor<br />

discussed above; and the indicator that will be used to compare the different levels of<br />

affect between the different alternatives.<br />

Table 63:<br />

Focal<br />

Group<br />

Cavity<br />

Nesters<br />

Road Associated Motorized Trail/ORV Combined Analysis Analysis<br />

Factors¹<br />

Associated Factors Factors<br />

Indicator<br />

Nesting Loss Nesting Loss Harvest/Direct Effects Miles<br />

Disturbance, Displacement,<br />

Avoidance, Harassment<br />

Disturbance, Displacement,<br />

Avoidance, Harassment<br />

Disturbance/Indirect<br />

Effects<br />

Disturbance Zone<br />

Summarized In Acres<br />

Table 64 summarizes the harvest indicator, disturbance indicator, and analysis area that<br />

will be used to analyze the effects of the different alternatives to cavity nesters.<br />

Table 64:<br />

Focal Species Motorized Activity Harvest<br />

Hairy<br />

Woodpecker<br />

Disturbance<br />

Analysis<br />

Indicator<br />

Zone<br />

Area<br />

Motorized Trail/ORV Use Route Miles 60m Ponderosa Pine<br />

Mixed Conifer<br />

90

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