Some Birds of Unusual Occurrence in Orleans County, N. Y.
نویسندگان
چکیده
منابع مشابه
Characterization of structurally unusual diiron N(x)H(y) complexes.
A series of fascinating diiron complexes featuring bridging N(x)H(y) ligands stabilized by tris(phosphine)borate ([PhB(CH(2)PR(2))(3)] = [PhBP(R)(3)]) ligands have been characterized. Hydrazine activation by [PhBP(R)(3)]Fe-Me (R = Ph or cyclohexylmethyl) leads to diiron Fe(2)(mu-eta(1):eta(1)-N(2)H(4))(mu-eta(2):eta(2)-N(2)H(2)) complexes featuring both bridging hydrazine and hydrazido ligands....
متن کاملY microdeletions in the Istria county, Croatia.
AIM To establish the frequency of Y chromosome microdeletions in an unselected group of infertile Croatian men. METHODS An unselected group of 105 patients (male partners of infertile couples), both with idiopathic and non-idiopathic infertility, consecutively referred to the outpatient infertility clinic, gynecology department, General Hospital Pula, Istria County, Croatia, was examined for ...
متن کاملPolyphyletic origin of toxic Pitohui birds suggests widespread occurrence of toxicity in corvoid birds.
Pitohui birds from New Guinea have been found to contain a toxin otherwise only found in neotropical poison arrow frogs. Pitohuis have been considered to be monophyletic and thus toxicity is thought to have evolved once in birds. Here, we show that Pitohuis, rather than being a tight-knit group, are polyphyletic and represent several lineages among the corvoid families of passerine birds. This ...
متن کاملFunction and occurrence of facial flushing in birds.
So far overlooked as a pigment involved in visual communication, the haemoglobin contained in the blood of all birds is responsible for the red flushing colours in bare skin areas of some species. Our aim has been twofold: (1) to study sub-epidermical adaptations for blood circulation in two flushing species: the crested caracara (Polyborus plancus) and the hooded vulture (Necrosyrtes monachus)...
متن کاملBirds in Residential Metropolitan New Orleans Neighborhoods and Their Relationships to the Batture and Yard Vegetation
............................................................................................................................. iv Introduction ........................................................................................................................ 1 Methods ...............................................................................................................................
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ژورنال
عنوان ژورنال: The Auk
سال: 1899
ISSN: 0004-8038,1938-4254
DOI: 10.2307/4069573