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14 September 2021 On the breeding biology of the Blue-throated Hillstar (Oreotrochilus cyanolaemus), a recently discovered species from southern Ecuador
Paul A. Molina, Daniel O. Pacheco, Agustín U. Carrasco, Boris A. Tinoco
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Abstract

We describe basic information about the nesting ecology of the recently discovered Blue-throated Hummingbird (Oreotrochilus cyanolaemus) based on a single nest found in Cerro de Arcos in the high Andes of southwestern Ecuador. The nest was located inside a small cave, attached to a rock wall, and was constructed with moss, rootlets, twigs, dry leaves, and black and white feathers, as well as soft down Puya sp. (Bromeliaceae) fibers. The nest contained 2 white, oval eggs. The fledglings left the nest to explore areas outside the cave 44 d after hatching; both fledglings already had the characteristic blue throat of male individuals. The Blue-throated Hillstar is a threatened species and its nesting area is currently affected by unmanaged tourism.

Paul A. Molina, Daniel O. Pacheco, Agustín U. Carrasco, and Boris A. Tinoco "On the breeding biology of the Blue-throated Hillstar (Oreotrochilus cyanolaemus), a recently discovered species from southern Ecuador," The Wilson Journal of Ornithology 132(4), 1007-1014, (14 September 2021). https://doi.org/10.1676/1559-4491-132.4.1007
Received: 24 September 2019; Accepted: 4 March 2021; Published: 14 September 2021
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