Published: Tue, September 12, 2017
World | By Tasha Manning

Six species of Amazonian Woodcreepers (Birds: Dendrocolaptidae) preying upon lizards and frogs: Journal of Natural History: Vol 46, No 47-48

Six species of Amazonian Woodcreepers (Birds: Dendrocolaptidae) preying upon lizards and frogs: Journal of Natural History: Vol 46, No 47-48

Bluish-fronted Jacamar Galbula cyanescens
Bluish-fronted Jacamar Galbula cyanescens

Dietary data from a large sample of woodcreepers (16 spp., n = 139), revealed that six species of dendrocolaptids occasionally feed upon lizards and frogs. These birds, which are mainly insectivorous, encounter and feed on lizards while perching on tree trunks, probably in association with army-ant swarm feeding behavior. Frog intake may be related to declines in the abundance of invertebrate prey. The bones recovered were identified as one small species of gecko, Gonatodes humeralis , and at least one anuran. We estimated that in the entire sample, about eight lizards and two frogs were ingested. The partially digested gecko material allows determination of which bones are more resistant to digestion, although it is possible that these elements were differentially retained in the stomach. These elements correspond to the most frequently preserved bones in the fossil record of geckos, indicating that the same portions of the skeleton persist under the processes of both digestion and fossilization.

Alternative to traditional lawn in & quot; Planting Design for Dry Gardens & quot; From Olivier Filippi
The book I discussed today, in English, went on sale a year ago (January 2016) and is currently not available in Spanish. For its selection, it has been inspired by wild plant communities in Europe, the Middle East and the United States.

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