David Vallejo

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I've got a degree in Biology and I'm Environmental Educator. Throughout my career I have been able to carry out several projects, specially focused on environment and its learning. My passion is to communicate about the environment and contribute to its conservation.

Fruit bats. By Jeffrey Paul Wade / Shutterstock.com

Perception in the animal kingdom: three unique information systems

David Vallejo - 6 October, 2019

Tiger swallowtail butterfly. By Scott Carroll

Invertebrates: importance, threats of extinction and conservation methods

David Vallejo - 28 January, 2019

Two wolves fighting on snow. By David Dirga | Shutterstock.com

The social system of dominance in animals: hierarchy and submission

David Vallejo - 27 December, 2018

An adorable sugar glider (Petaurus breviceps) climb on the tree. By Arif Supriyadi | Shutterstock.com

8 fascinating animal facts about 8 different species

David Vallejo - 14 December, 2018

Squirrel monkey in Ecuadorian jungle. By Ludmila Ruzickova | Shutterstock.com

How does animal behaviour develop?

David Vallejo - 2 December, 2018

Big herd of wildebeest is about Mara River. By Gudkov Andrey | Shutterstock.com

Biogeographic movements: dispersal, dissemination and migration

David Vallejo - 28 November, 2018

What is homeostasis?

David Vallejo - 26 November, 2018

The domestication of animals: origins, general characteristics and stages

David Vallejo - 14 November, 2018

Two foxes fight in a snowy environment in Zao, in the North of Japan. Zao is the home to the only fox village in the world, which is a sanctuary for rescued foxes. They are tame enough to get close to. By CloudVisual | Unsplash

Biological interactions: male-male competition during the breeding season

David Vallejo - 31 October, 2018

A silhouettes of cranes in flight. By Sergey Uryadnikov | Shutterstock.com

The incredible journeys of migratory birds

David Vallejo - 24 October, 2018

A cute koala. By Yatra | Shutterstock.com

What are the longest sleeping mammals?

David Vallejo - 17 October, 2018

A herd of Eland or Taurotragus Oryx. By Sutirta Budiman

Population dynamics models: Levins and the source-sink theory

David Vallejo - 3 October, 2018

Owls Are The Order Strigiformes Constituting 200 Extant Bird Of Prey Species Most Are Solitary And Nocturnal. By Ammit Jack | Shutterstock.com

A bird’s-eye view: why sight is their most developed sense

David Vallejo - 25 September, 2018

Polar Bear (Ursus maritimus). By Vaclav Sebek | Shutterstock.com

Are species larger in cold environments? The principles of Bergmann’s rule

David Vallejo - 18 September, 2018

Giant panda climbing tree. By Hung Chung Chih | Shutterstock.com

Flagship species: Advantages and disadvantages of their management

David Vallejo - 4 September, 2018

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