Abstract
Clytoctantes alixii is a bird that lives on the edges of old-growth, secondary and cleared forests undergoing regeneration and presents a distribution restricted to Colombia and Venezuela. The species is considered to be at risk of extinction (EN) due to its particular characteristics and restricted distribution. However, knowledge of its ecology and distribution is still incipient. The objective of this study was therefore to expand the knowledge of C. alixii in Caldas, present the southernmost record of the species and describe its behaviour. The species was monitored within the protected areas of the Manso Diversion in the period 2014 and 2017, using mist nets and fixed radius point counts. Two individuals of C. alixii were recorded, both by observation, with one of these subsequently also captured in a forest in an advanced state of succession. Recording of this population is important because it is the southernmost in the Cordillera Central and confirms that habitats with the presence of hollow stem plants largely define the presence of the species, as well as potentially determining the location of other populations of this species within its range of distribution.
Highlights
Clytoctantes alixii (Elliot, 1870), the recurve-billed bushbird, is a near-endemic resident bird species with a distribution restricted to northern Colombia and the adjacent zone of Venezuela and within an elevation range of 180 to 1600 m a.s.l
The study area is located on the eastern flank of the Central Cordillera of Colombia, between the Municipalities of Norcasia and Samaná (5°36'N, 74°57'W; Figure 1A)
This may be since it is a rare and local bird with specific habitat and dietary requirements, which makes it more susceptible to threat through habitat loss (Colorado 2008). The discovery of this population allows recognition of C. alixii as a priority species for conservation and research in Caldas, Colombia. This is the second population in the Cordillera Central and the southernmost record of the species following its re-discovery, which makes the area of considerable importance for conservation of the species
Summary
Clytoctantes alixii (Elliot, 1870), the recurve-billed bushbird, is a near-endemic resident bird species with a distribution restricted to northern Colombia and the adjacent zone of Venezuela and within an elevation range of 180 to 1600 m a.s.l. Moreno-López belongs to the group of antbirds (Hilty and Brown 2001; Laverde and Stiles 2007; Ayerbe 2018) and its diet mainly comprises insects and other arthropods (Restall et al 2006; Ridgely and Tudor 2009). This is a rare and local species found in the dense understoreys of old-growth, secondary and cleared forests undergoing regeneration (Hilty and Brown 2001; Restall et al 2006; Laverde and Stiles 2007)
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