Direct and Indirect Estimates of Peregrine Falcon Population Size in Northern Eurasia
نویسندگان
چکیده
منابع مشابه
Modeling and Control of the Peregrine Falcon Population
Peregrine falcons were recently removed from the endangered species list and there is a desire to harvest these birds for sport. The US Fish and Wildlife Service currently allows minimal harvesting in parts of the country. However, the question is how many can be extracted from the population before the future population will go into decline. My research utilizes a population projection matrix ...
متن کاملPeregrine Falcon Eggs: Egg Size, Hatchling Sex, and Clutch Sex Ratios
Eggs (n = 367) collected from wild Peregrine Falcon (Falco peregrinus anatum) nests between 1976 and 1990 in Colorado and New Mexico were artificially incubated and hatched. We retrospectively examined these data for variation in egg length, breadth, and initial mass of hatchlings to resolve questions about relationships among egg size, chick size, and sex; and egg size related to first and sec...
متن کاملDiving-Flight Aerodynamics of a Peregrine Falcon (Falco peregrinus)
This study investigates the aerodynamics of the falcon Falco peregrinus while diving. During a dive peregrines can reach velocities of more than 320 km h⁻¹. Unfortunately, in freely roaming falcons, these high velocities prohibit a precise determination of flight parameters such as velocity and acceleration as well as body shape and wing contour. Therefore, individual F. peregrinus were trained...
متن کاملPeregrine Falcon Semen: a Quantitative and Qualitative Examination
Collection frequencies and certain characteristics of Peregrine Falcon (Falco peregrinus) semen were investigated using semen from a falcon trained to copulate on a specially designed hat. Semen volume increased significantly when collections were increased from two to three times/day, but cells/ejaculate decreased. No significant difference in number cells/ejaculate or cells/microliter was det...
متن کاملDirect and indirect estimates of HIV-1 incidence in a high-prevalence population.
While the worldwide AIDS epidemic continues to expand, directly measured incidence data are difficult to obtain. Methods to reliably estimate human immunodeficiency virus type 1 (HIV-1) incidence from more easily available data are particularly relevant in those parts of the world where prevalence is rising in heterosexually exposed populations. The authors set out to estimate HIV-1 incidence i...
متن کاملذخیره در منابع من
با ذخیره ی این منبع در منابع من، دسترسی به آن را برای استفاده های بعدی آسان تر کنید
ژورنال
عنوان ژورنال: The Auk
سال: 2000
ISSN: 1938-4254,0004-8038
DOI: 10.1093/auk/117.2.455