Factors Affecting the Number of Breeding Grey-faced Buzzard-Eagles Butastur indicus

Breeding Biology of a Grey Eagle-buzzard Population in Patagonia

-we studied the breeding performance of a Grey Eagle-Buzzard (Geranoaetus melanoleucus) population in a region of northern Argentinian Patagonia where two different habitats occur; the mountains near the Andean cordillera and the plains where shrub-steppes predominate. Mean eagle density was 1 pair/l9 km2 (N = 44), with higher densities occuring in the plains (1 pair03.2 km2, N = 17) than in th...

Factors Affecting Breeding Success

Factors affecting the distribution and abundance of Western grey kangaroos

All the remnants of native vegetation in a 1680 km2 area of the central wheatbelt of Western Australia were assessed for use by two species of kangaroo (Western grey kangaroo Macropus fuliginosus and euro M. robustus). Use was determined from faecal pellet density. Densities over large areas (100 km2) varied with the amount of residual native vegetation in the area. The less the vegetation the ...

Food Habits of Bald Eagles Breeding in the Arizona Desert

-of 1814 foraging attempts, prey captures, or nest deliveries by Bald Eagles (Haliaeetus Zeucocephalus) in 14 Arizona breeding areas during 1983-1985, 1471 observations were identifiable to at least class: fish (76%), mammal (18%), bird (4%), and reptile/ amphibian (2%). Forty-five species were recorded: catfish (Zctalurus punctatus, fylodictis olivaris), suckers (Catostomus ins&k, C. clarki), ...

O-21: Factors Affecting The Number of Grade A Embryos in Assisted Reproductive Technology

Background: Infertility is one of the most devastating diagnoses for any woman or man to face, and assisted reproductive technology (ART) is a great gift of life given to these people. There are many factors influencing success rate of ART but quality of embryos is believed to improve this rate and therefore is a major challenge. This paper will focus on examining factors affecting the number o...