This nature note is for bluebird landlords, those who have and maintain bluebird boxes. Recently I mentioned that house sparrows can destroy bluebird eggs and even kill the young. The “Sparrow ...

But I’d observed house sparrows divebombing the back door, which I’d never seen before, and then learned that while brown-headed cowbirds often remove eggs to make room for their own, they don ...

image: Researchers found that the egg size of house sparrows could vary as much as by 50 per cent in volume from the smallest to largest egg. view more . Credit: Thomas Kvalnes, NTNU.

The more feathers a male sparrow carries to the nest, the more eggs the female will lay Date: May 7, 2013 Source: Plataforma SINC Summary: A new study has found that female sparrows will invest ...

It’s almost impossible to realize I once said that when I saw my first house sparrow. Back then, this introduced species was known as the English sparrow. That first visit was sometime in the ’60s.

The Influence of Urban Environments on Oxidative Stress Balance: A Case Study on the House Sparrow in the Iberian Peninsula. Frontiers in Ecology and Evolution , 2017; 5 DOI: 10.3389/fevo.2017. ...

Birds, for the most part, do not live in nests. These complex structures, sometimes meticulously assembled for more than a month, tend to be used for the express purposes of incubating eggs and ...