This study examined the ability of pole-bound hawk-kites to protect maturing fields of corn from blackbird damage. Hawk-kites were placed over half of each experimental field. Damage on the hawk-kite side was slightly, but not significantly, less than on the unprotected side as measured by the percent of ears damaged by birds, total amount of grain lost to birds, or percent of crop damaged by b...

Hawk tea (Litsea coreana Lévl. var. Lanuginosa (Migo) Yen C. Yang & P.H. Huang), a very popular herbal tea material, has attracted more and more attention due to its high antioxidant properties and possible therapeutic effect on type II diabetes mellitus. The raw materials of Hawk tea are usually divided into three kinds: bud tea (BT), primary leaf tea (PLT) and mature leaf tea (MLT). In th...

It is fully functional and highly portable mini Unmanned Aerial Vehicle (UAV) system, HAWK, for conducting aerial localization. HAWK is a programmable mini helicopter—Draganflyer X6—armed with a wireless sniffer—Nokia N900. We developed custom PI-Control laws to implement a robust waypoint algorithm for the mini helicopter to fly a planned route. A Moore space filling curve is designed as a fli...

Edgar Allen1 was the first to point out and to emphasize the fact that estrogens are primarily "growth-promoting" agents. This characteristic of the estrogens is nowhere observed to better advantage than in the oviducts of birds. In the species of dove (Streptopelia risoria) utilized in the present study estrogens are evidently chiefly responsible for an increase in oviducal weight from about 2...

– We discuss a population of sequences subject to mutations and frequencydependent selection, where the fitness of a sequence depends on the composition of the entire population. This type of dynamics is crucial to understand, for example, the coupled evolution of different strands in a viral population. Mathematically, it takes the form of a reactiondiffusion problem that is nonlinear in the p...

Hawk tea (Litsea coreana Levl. var. lanuginose) is a traditional Chinese drink similar to green tea. In the present study, the preventive effects of Hawk tea on hepatic damage induced by carbon tetrachloride (CCl(4)) were studied in Sprague-Dawley rats. Silymarin was used as a positive control. Hawk tea was successfully shown to prevent hepatic damage in the rats. Serum levels of AST, ALT and L...

A series of sightings the Ayres’s Hawk-Eagle (Hieraaetus ayresii) were made over two summers in 2020-2021 and 2021-2022 from a property Fellside, north-eastern Johannesburg. Sightings species individual birds flight Linksfield Ridge Louis Botha Avenue, both located short distance to south observation location. It is postulated that combination an abundance prey form Rock Doves (Columba livia) i...