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Latest Passer Stories

Team Of Rivals Approach Used By Sparrows For Defending Territories
2014-02-26 11:08:05

University of Massachusetts at Amherst A new study of territorial songs used by chipping sparrows to defend their turf reveals that males sometimes will form a "dear enemy" alliance with a weaker neighbor to prevent a stronger rival from moving in. University of Massachusetts Amherst graduate student Sarah Goodwin and her advisor, behavioral ecologist Professor Jeffrey Podos, report their findings in the current issue of Biology Letters. They say that Goodwin's playback studies, funded...

Tree Sparrows Recognize Foreign Eggs In Their Nest By Color And Shape
2013-12-11 09:23:39

University of Veterinary Medicine, Vienna Many birds have reason to worry that the eggs in their nest might not be their own: birds often deposit eggs into other nests and it is not easy for parents to tell their eggs from others. Researchers at the University of Veterinary Medicine, Vienna have discovered that tree sparrows can recognize eggs deposited by other tree sparrows but do not always reject them. The results are published in the online journal Plos One. Building a nest, laying...

Researchers Show Invasive Sparrows Immune Cells Sharpen As They Spread
2013-11-20 13:39:25

University of South Florida Scientists unlock mysteries of invasive species by studying English sparrows which have spread to Kenya. When invasive species move into new areas, they often lose their natural enemies, including the microbes that make them sick. But new research from evolutionary biologists at the University of South Florida has found that adjustments in the immune system may help house sparrows, one of the world’s most common bird species, thrive in new areas. In...

More Feathers Means More Eggs When It Comes To Sparrows
2013-05-07 20:16:17

FECYT - Spanish Foundation for Science and Technology An international team lead by the University of Granada has found that female sparrows will invest more energy into laying eggs according to the male's ability to fill the nest with feathers which serve to insulate the chicks from the cold and keep them alive. Scientists from the University of Granada, in collaboration with the South African University of the Witwatersrand and the Percy FitzPatrick Institute at the University of Cape...

Aggressive Sparrows Escalate Their Territorial Threats
2013-02-13 10:39:27

Alan McStravick for redOrbit.com - Your Universe Online A new study out of the University of Washington (UW) seems to build on a previous study reported on here at redOrbit only last month. The previous study, out of Duke University, relied upon a robotic ℠Frankensparrow´ to monitor sparrow behavior leading up to and during territorial brawls. The UW team wanted to learn about the threat signals given off by the defensive sparrow to a potential invader. As it turns out, song...


Latest Passer Reference Libraries

0_b06b9003bc8890906f43bf84e4397128
2008-09-17 15:01:35

The Iago Sparrow (Passer iagoensis), also known as the Cape Verde Sparrow, is a member of the Old World sparrow family. It is native to the Cape Verde Islands where it is very common on most islands except for Fogo and is scarce on Santa Luzia, Branco and Sal. It can be found in a wide variety of habitats but is most commonly found in lava plains, desert and dry scrub. The Iago Sparrow is a little over 5 inches long with a 6.75 to 7.75 inch wingspan. The male has a black crown, throat and...

38_67f67f0127470ab4efa49214ff0ea061
2008-05-12 14:51:09

The Tree Sparrow (Passer montanus), breeds over much of Europe and Siberia. Allied forms of this species also occur in other parts of Asia. It has been introduced to Australia and the United States as well. In the United States it is known as the Eurasian Tree Sparrow or German Sparrow to differentiate it from the native, unrelated American Tree Sparrow. In some parts of its natural range, the Tree Sparrow is declining in population due to changes in farming methods. The Tree Sparrow is 5...

38_6eaaf24c4219298af4127093a5ec2058
2008-05-12 14:49:21

The Swahili Sparrow (Passer suahelicus), is a species of sparrow that is found in the savanna of southern Kenya and Tanzania. It was once considered a race of Gray-headed Sparrow. It does in fact hybridize with the Gray-headed Sparrow in southern Tanzania and possibly elsewhere. Photo Copyright and Credit

45_4dea6b48236f62a396e40400eff8ff2e
2008-05-12 14:43:46

The Gray-headed Sparrow (Passer griseus), is a breeding bird found in much of tropical Africa. It occurs in a wide range of open habitats, including open woodlands and human habitation. It is mainly resident in its range, but there is some seasonal migration, and flocks of up to 50 birds form outside the breeding season. The adult Gray-headed Sparrow has a pale gray head with a white mustache stripe, pale brown upperparts, whitish underparts and chestnut wings with a small white shoulder...

45_29a5003b5d2340a13d3a0823fbad9e85
2008-05-12 14:41:50

The Cape Sparrow (Passer melanurus), also called the Mossie, is a species of sparrow that lives in dry areas of southern Africa. Photo Copyright and Credit

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Word of the Day
mundungus
  • A stinking tobacco.
  • Offal; waste animal product; organic matter unfit for consumption.
This word comes from the Spanish 'mondongo,' tripe, entrails.