Foraging niche segregation among woodpeckers in the oak-pine forest of Kumaon Himalaya, Uttarakhand, India
Woodpecker Foraging Niche Segregation
DOI:
https://doi.org/10.11609/jott.9693.18.2.28317-28328Keywords:
Competition, deadwood conservation, foraging behavior, picidae, snags, substrate condition, sympatry, vertical stratification, woodpeckersAbstract
Understanding how species that share the same habitat coexist can reveal how niche segregation helps reduce competition and structure communities. This study examines foraging niche segregation among six woodpecker species: Brown-fronted Woodpecker Dendrocoptes auriceps, Himalayan Woodpecker Dendrocopos himalayensis, Grey-headed Woodpecker Picus canus, Scaly-bellied Woodpecker Picus squamatus, Greater Yellownape Chrysophlegma flavinucha, and Lesser Yellownape Picus chlorophus in the oak-pine forests of Ranikhet, Kumaon Himalaya, Uttarakhand. Opportunistic observations were conducted to determine key foraging niche dimensions, including foraging tree diameter, foraging height, substrate type, vertical position, and the condition of foraging trees and substrate. The analysis indicates that these woodpecker species exhibit distinct foraging preferences concerning substrate use, foraging height, and vertical stratification, while they did not seem to respond to the presence of dead substrate. Notably, the Grey-headed and Scaly-bellied Woodpeckers, unlike the other species that primarily forage on trees, exhibited a preference for lower foraging heights and were frequently observed foraging on the ground.
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