Showing posts with label bird. Show all posts
Showing posts with label bird. Show all posts

Saturday, October 14, 2023

pratincoles

 The pratincoles or greywaders are a group of birds which together with the coursers make up the family Glareolidae. They have short legs, very long pointed wings and long forked tails. 


 

Saturday, March 25, 2023

Extra-pair copulation

 Extra-pair copulation (EPC) is a mating behaviour in monogamous species. Monogamy is the practice of having only one sexual partner at any one time, forming a long-term bond and combining efforts to raise offspring together; mating outside this pairing is extra-pair copulation.


 

Extra-pair copulation is common in birds. For example, zebra finches, although socially monogamous, are not sexually monogamous and hence do engage in extra-pair courtship and attempts at copulation.

Friday, March 3, 2023

lammergeier

 The bearded vulture (Gypaetus barbatus), also known as the lammergeier and ossifrage, is a very large bird of prey and the only member of the genus Gypaetus. Traditionally considered an Old World vulture, it actually forms a separate minor lineage of Accipitridae together with the Egyptian vulture (Neophron percnopterus), its closest living relative. It is not much more closely related to the Old World vultures proper than to, for example, hawks, and differs from the former by its feathered neck. Although dissimilar, the Egyptian and bearded vulture each have a lozenge-shaped tail—unusual among birds of prey. It is vernacularly known as Homa, a divine bird in Iranian mythology.


 

Thursday, December 29, 2022

horaltic

 

Etymology

Etymology is uncertain. In 2007 it was speculated that the derivation was a mishearing of "heraldic".

Adjective

horaltic (comparative more horaltic, superlative most horaltic)

  1. (rare) Used to describe birds, particularly vultures, in a characteristic pose with wings spread and raised. 


 

Friday, November 18, 2022

Oology

 Oology (or oölogy) is a branch of ornithology studying bird eggs, nests and breeding behaviour. The word is derived from the Greek oion, meaning egg. Oology can also refer to the hobby of collecting wild birds' eggs, sometimes called egg collecting, birdnesting or egging, which is now illegal in many jurisdictions.

 


Egg collecting was still popular in the early 20th century, even as its scientific value became less prominent. Egg collectors built large collections and traded with one another. Frequently, collectors would go to extreme lengths to obtain eggs of rare birds. For example, Charles Bendire was willing to have his teeth broken to remove a rare egg that became stuck in his mouth. He had placed the egg in his mouth while climbing down a tree.

Thursday, June 23, 2022

culmen

 The culmen of a bird is the dorsal ridge of the upper mandible.


 A bird's culmen is measured in a straight line from the tip of the beak to a set point.

Monday, June 20, 2022

Icterids

 Icterids (/ˈɪktərɪd/) or New World blackbirds make up a family, the Icteridae (/ɪkˈtɛrɪdi/), of small to medium-sized, often colorful, New World passerine birds. 

 


Most species have black as a predominant plumage color, often enlivened by yellow, orange, or red. The species in the family vary widely in size, shape, behavior, and coloration. The name, meaning "jaundiced ones" (from the prominent yellow feathers of many species) comes from the Ancient Greek ikteros via the Latin ictericus.



This group includes the New World blackbirds, New World orioles, the bobolink, meadowlarks, grackles, cowbirds, oropendolas, and caciques.

Wednesday, June 15, 2022

passerine

 A passerine (/ˈpæsəraɪn/) is any bird of the order Passeriformes (/ˈpæsərɪfɔːrmiːz/; from Latin passer 'sparrow' and formis '-shaped'), which includes more than half of all bird species.

 




Friday, June 10, 2022

dickcissel

 The dickcissel (Spiza americana) is a small seed-eating bird in the family Cardinalidae. It breeds on the prairie grasslands of the Midwestern United States and winters in Central America, northern Colombia, and northern Venezuela. It is the only member of the genus Spiza, though some sources list another supposedly extinct species.

 


Friday, December 11, 2015

Accipiter

The genus Accipiter is a group of birds of prey in the family Accipitridae, many of which are named as goshawks and sparrowhawks. They can be anatomically distinguished from their relatives by the lack of a procoracoid foramen. Two small and aberrant species usually placed here do possess a large procoracoid foramen and are also distinct as regards DNA sequence. They may warrant separation in the old genus Hieraspiza.
File:Collared Sparrowhawk kobble08.JPG
Extant Accipiters range in size from the Little Sparrowhawk (A. minullus), in which the smallest males measure 20 cm (7.9 in) long, span 39 cm (15 in) across the wings and weigh 68 g (2.4 oz), to the Northern Goshawk (A. gentilis), in which the largest females measure 64 cm (25 in) long, span 127 cm (50 in) across the wings and weigh 2,200 g (4.9 lb). These birds are slender with short broad rounded wings and a long tail which helps them manoeuvre in flight. They have long legs and long sharp talons used to kill their prey, and a sharp hooked bill used in feeding. Females tend to be larger than males. They often ambush their prey, mainly small birds and mammals, capturing it after a short chase. The typical flight pattern is a series of flaps followed by a short glide. They are commonly found in wooded or shrubby areas.

Wednesday, February 15, 2012

Currawongs


Currawongs are three species of medium-sized passerine birds belonging to the genus Strepera in the family Artamidae native to Australasia. These are the Grey Currawong (Strepera versicolor), Pied Currawong (S. graculina), and Black Currawong (S. fuliginosa). The common name comes from the call of the familiar Pied Currawong of eastern Australia and is onomatopoeic. They were formerly known as Crow-shrikes or Bell-magpies.

Despite their resemblance to crows and ravens, they are only distantly related to the corvidae, instead belonging to an Afro-Asian radiation of birds termed the Malaconotoidea.

Wednesday, November 16, 2011

Friday, October 22, 2010

Ornithology


Ornithology (from Greek: ὄρνις, ὄρνιθος, ornis, ornithos, "bird"; and λόγος, logos, "knowledge") is a branch of zoology that concerns the study of birds. Several aspects of ornithology differ from related disciplines, due partly to the high visibility and the aesthetic appeal of birds. Most marked among these is the extent of studies undertaken by amateurs working within the parameters of strict scientific methodology.

synanthrope

 A synanthrope (from ancient Greek σύν sýn "together, with" and ἄνθρωπος ánthrōpos "man") is an organism that evolve...