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- Global topographic uplift has elevated speciation in mammals . . .
Geology and climate affect speciation A combination of path analysis applied to palaeo-reconstructions of mammals and birds with analysis of palaeoclimatic data shows that uplift over the last 3
- Birds are officially more colourful closer to the equator
Why birds living in the tropics are more colourful than their northern and southern counterparts is not so straightforward to answer Chris and his team have suggested a couple of different reasons, from the dark nature of rainforest interiors meaning it is better to be brightly coloured, to the structural complexity of these environments leading to structural complexity of colour
- Why are there so many birds? - Popular Science
There are thousands of species of birds living on Earth today–anywhere from around 10,000 to as many as 18,000, depending on how you define “species ”The fossil record suggests that almost
- Indian vultures: Decline of scavenger birds caused 500,000 . . .
The authors estimated that between 2000 and 2005, the loss of vultures caused around 100,000 additional human deaths annually, resulting in more than $69bn (£53bn) per year in mortality damages
- Brown-Headed Cowbird - National Geographic
The common brown-headed cowbird is the most widespread brood parasite in North America Polytypic Length 7 5" A smallish, compact and stocky blackbird with a short and thick-based bill, almost
- Mourning Dove Overview, All About Birds, Cornell Lab of . . .
A graceful, slender-tailed, small-headed dove that’s common across the continent Mourning Doves perch on telephone wires and forage for seeds on the ground; their flight is fast and bullet straight Their soft, drawn-out calls sound like laments When taking off, their wings make a sharp whistling or whinnying Mourning Doves are the most frequently hunted species in North America
- A long and troublesome journey: Peoples perceptions and . . .
Relationship between the perception of vultures as harmful (in % of interviewees) and the amount of livestock based on generalized linear models
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