Juan Cornejo

Juan Cornejo
Auckland Zoo

PhD

About

27
Publications
5,253
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105
Citations
Introduction
Additional affiliations
January 2009 - March 2012
Texas A&M University
Position
  • Graduate Student, PhD Biomedical Science

Publications

Publications (27)
Article
Psittacidae is one of the most endangered families of birds in the world. Knowledge of their nutrition is important for understanding their survival and productivity in the wild, as well as for their adequate husbandry under human care. Hand‐rearing is a common practice for psittacines, however research on their nutrition is limited. We analysed th...
Article
When managing the health of flocks in aviaries, extensive knowledge of the natural history of the species kept is key to fulfilling the environmental, social, nutritional and behavioral requirements of the birds, whether in a mixed- or sole-species aviary. Species compatibility with environment, climate, and other co-occupants plays a role as well,...
Article
Research on psittacine nutrition is limited, and nestling requirements are poorly understood. This study analysed fatty acid (FA) profiles of crop contents of free-living scarlet macaws (Ara macao, n = 18), red-and-green macaws (Ara chloropterus, n = 5), Cuban parrots (Amazona leucocephala bahamensis, n = 27), lilac-crowned Amazons (Amazona finschi...
Technical Report
Full-text available
The population of the International Breeding Program of Lear’s Macaw at the end of 2018 was composed of 166 birds. During the year a total of eight birds were reared to independence from four breeding pairs at three institutions, one bird was rescued from the wild, and two died. 60% of the living population is captive born from a total of 20 founde...
Technical Report
Full-text available
The following guidelines serve as minimum standard requirements for keeping Lear´s macaws in captivity as part of ICMBio Captive Breeding Program. These protocols are mainly based on the experience of Loro Parque Foundation and AWWP keeping and breeding the species, and have been enriched by the contributions of the participants of the Program. Spe...
Technical Report
Full-text available
Reporte Final. Cartagena - Bolívar, Colombia. 9 al 12 de Diciembre, 2015. IUCN/SSC/Grupo Especialista en Conservación y Cría (CBSG), Oficina Regional México.
Article
Full-text available
The horned guan (Oreophasis derbianus) is an endangered species with small and seriously fragmented wild populations. Breeding efforts during the last decade have maintained a slowly increasing captive population with the potential to play an important role in the recovery of the species. Clinical hematology and biochemistries are powerful tools to...
Article
Megapodes are characterized by using means other than body heat to incubate their eggs. The Maleo Macrocephalon maleo is endemic to Sulawesi where it is Endangered, and lays its eggs in pits excavated in soil heated by geothermal sources. A novel method used to incubate Maleo eggs at the Bronx Zoo/Wildlife Conservation Society, NY, USA, is reported...
Article
Hand-rearing is a common practice for the propagation of captive psittacines, however, research on their nutrition is limited and the requirements of growing chicks are not well understood. The nutrition of 15 commercially available parrot hand-feeding formulas was compared with the average content of the crops of free living Scarlet Macaw (Ara mac...
Thesis
Full-text available
The Psittacidae is one of the most endangered families of birds in the world. Knowledge of its nutrition is important for understanding their survival and productivity in the wild, as well as for their adequate husbandry in captivity. Hand-rearing is a common practice for this group. However, research on their requirements is limited. Analysis of t...
Article
Full-text available
Context: It is difficult to determine with accuracy the nutrition of bird diets through observation and analysis of dietary items. Collection of the ingested material from the birds provides an alternative but it is often limited by the small sizes of samples that can be obtained. Aims: We tested the efficacy of near-infrared reflectance spectrosco...
Article
Hand rearing of neonates is a common practice for the propagation of psittacines. However, nutritional requirements for their growth and development are not well understood, and malnutrition is common. We analysed the amino acid (AA) profile of the crop contents of 19 free-living scarlet macaw (Ara macao) chicks, 19-59 days old. Predicted metaboliz...
Conference Paper
Full-text available
Este trabajo se centra en las dos especies de psitácidos endémicos de México que el autor considera más raros en la avicultura, y de los que menos se conoce sobre su biología y reproducción en cautiverio: el Perico de Socorro y la Cotorra Serrana Oriental. La información presentada recopila el conocimiento que existe respecto a su biología y reprod...
Article
Many avian species naturally develop or are easily induced to develop atherosclerosis. Various studies have explored the effect of providing supplemental unsaturated fatty acids in an attempt to reduce atherosclerosis, with omega-3 fatty acids providing the most promising results.
Article
We conducted nutritional analyses of diets offered to and ingested by seven pairs of horned guans (Oreophasis derbianus) in three zoos. Digestibility was calculated with individually housed birds (n=1 at each zoo). Diets offered varied widely among institutions, both in ingredients fed as well as in nutrient composition. Feeding selectivity was evi...
Article
The Horned guan Oreophasis derbianus is one of the most threat cracids but the species has always been scarce in captivity. By the end of 2007, the International Studbook registered a global population of 70 individuals in human care. This population is genetically compromised, as most of the potential founders are not yet represented. In the last...
Article
Full-text available
This paper describes the reproductive biology of the bearded wood-partridge in captivity, including details of the nest construction, egg laying, incubation and hatching. Resumen Se describen las características básicas de la biología reproductiva del chivizcoyo Dendrortyx barbatus en cautiverio, incluyendo detalles sobre la construcción del nido,...
Article
Field observations and anatomical adaptations of wild Loriinae show a high degree of diet specialization. Although these birds are commonly maintained in captivity, there are limited data about adequate diet and nutritional requirements. The aim of this study is to make qualitative and quantitative reviews of the diet and nutrition of these birds a...
Article
In Brazil the wild population of Purple-bellied parrot Triclaria malachitacea is in decline. The species is seldom found in zoological collections because it is difficult to maintain in captivity. At the beginning of 1998 Loro Parque Fundacion, Tenerife, maintained 21 (9.10.2) birds, c. 35% of the T. malachitacea population maintained in captivity...
Article
Baseline data for 17 behaviours grouped into six categories were collected for ten captive and nine soft‐released Scarlet macaws Ara macao, in order to analyse daily activity budgets. Most of the birds were captive‐bred and hand‐reared. The captive birds spent less time on Socializing and Feeding behaviours than the released birds but spent more ti...
Article
Full-text available
El presente trabajo es el resultado del 2° Simposio El Jaguar Mexicano en el Siglo XXI: Taller de Análisis de la Viabilidad de Poblaciones y del Hábitat llevado a cabo en el Club de Golf de Cuernavaca, Morelos, México, del 21 al 24 de noviembre, 2006. México es un reducto importante para del jaguar (Panthera onca), pero la continua pérdida del hábi...

Projects

Projects (3)
Project
We will explore the utility of remote sensing features (aerial imagery) to create vegetation indices and a series of novel derivatives in order to model the distribution of an endangered parrot, the Red-crowned Parrot (Mexican Red-headed Parrot, Green-cheeked Parrot) aka Red-crowned Amazon (Amazona viridigenlis) in the area of interest. We used random subset feature selection algorithm and MaxEnt methods in R as designed by James Tracy of the Knowledge Engineering Lab. Schubot Exotic Bird Health also supported this work.
Project
Inappropriate diet causes many of the health problems commonly reported in parrots by psittaculturists and veterinarians. The dietary management of parrots would benefit from information derived from studies of dietary habits of parrots, however, it is unclear how complete this body of knowledge is at this time. Documentation of parrots’ dietary habits has grown dramatically over the past century. Reports of parrots consuming several foodstuffs beyond the reproductive parts of plants (“alternate foodstuffs” hereafter) have increased with this growth. The extent of the presence of alternate foodstuffs in parrot diets is currently unknown. We used Google search engines (i.e., Scholar, Videos, Images) to determine how well psittaciform dietary habits have been studied to date and to quantify reports of alternate foodstuffs consumption among psittaciform genera.