Hawk Research Articles

The Hawk's Done Gone and Other Stories

The Hawk's Done Gone and Other Stories

Hughes' the Hawk in the Rain

Hughes' the Hawk in the Rain

Moths, Hawks and Long Migrations

Moths, Hawks and Long Migrations

At the Hawk's Well

At the Hawk's Well

Brachiopoda of the Melville Island Group (Upper Devonian), Banks Island, N.W.T.

ABSTRACT On northeastern Banks Island, N.W.T., a total of 3700 feet of late Devonian clastics are exposed. In the lower 2600 feet of section occur rich benthonic faunas consisting primarily of brachiopods, pelecypods and corals. Thirteen brachiopod species are illustrated. One genus, Retichonetes, has not been previously reported from the Arctic Islands. Of particular importance is the presence of the rhynchonelloid zone fossils, Ladogioides pax and Calvinaria albertensis, and recognition of the overlap in stratigraphic ranges of Eleutherokomma and Cyrtospirifer. Analysis of the brachiopod faunas yields an age of from earliest Frasnian (zone of Ladogioides pax = Waterways and basal Hay River Formations) to late Frasnian (zone of Calvinaria albertensis = lower Mount Hawk and Ireton formations).

Mortality of Hawks and Owls in Speyside

Mortality of Hawks and Owls in Speyside

A note on the breeding of Harris' hawks: at Los Angeles Zoo

A note on the breeding of Harris' hawks: at Los Angeles Zoo

March Hawk Preys on Cottontails

March Hawk Preys on Cottontails

FEAR RESPONSES OF BOBWHITE QUAIL (COLINUS VIRGINIANUS) TO A MODEL AND A LIVE RED-TAILED HAWK (BUTEO JAMAICENSIS).

Furchtreaktionen gekafigter, von Hand aufgezogener Baumwachteln (Colinus virginianus) wurden mit Hilfe eines handzahmen Bussards der Art Buteo jamaicensis und seiner lebensgrosen Flugattrappe qualitativ und quantitativ untersucht. Dabei beachteten wir Kontrollmasnahmen, die andere Autoren in ahnlichen Untersuchungen bisher vernachlassigt hatten.

Hopkins' "Windhover" and Southwell's Hawk

Hopkins' "Windhover" and Southwell's Hawk

Hopkins' "Windhover" and Southwell's Hawk (Continued)

Hopkins' "Windhover" and Southwell's Hawk (Continued)

Migratory Congregations of Hawks

Migratory Congregations of Hawks

Fable of the Hawk and the Nightingale

Fable of the Hawk and the Nightingale

Hawks and Handsaws

Hawks and Handsaws

Hawks, Owls and Wildlife John J. Craighead Frank C. Craighead

Hawks, Owls and Wildlife John J. Craighead Frank C. Craighead

Hawks, Owls and Wildlife

Hawks, Owls and Wildlife

Short-term oscillations in sign of phototaxis in the eyed hawk caterpillar (Smerinthus ocellata L.)

Raupen vonSmerinthus ocellata L. im dritten bis funften Larvenstadium zeigen im Phototaxisversuch unregelmasig periodische Umkehr der Kriechrichtung (Fig. 1). Aus der weiteren Analyse der experimentellen Daten ergibt sich, dass dieser Richtungswechsel in der Mehrzahl der Falle durch einen tatsachlichen Umschlag des Richtungssinnes der Phototaxis verursacht wird.

The Hawk: Los Angeles, August 19th

The Hawk: Los Angeles, August 19th

Notes on Hawks and Owls

Notes on Hawks and Owls

Protection of Hawks and Owls

Protection of Hawks and Owls