A Preliminary Study on the Small Population Paradigm and Nesting Biology of Rose-Ringed Parakeets (Psittacula Krameri) in Gujar Khan, Pakistan
نویسندگان
چکیده
منابع مشابه
Nestling Development of Ring-necked Parakeets (Psittacula krameri) in a Nest Box Population
Chick development of a population of non-native Ring-necked Parakeets (Psittacula krameri) (RNP) has been investigated between 2006 and 2008 in Heidelberg, Germany. In parrots hatching asynchrony is common. RNP chicks are under natural selection to fledge synchronously with their siblings, as parents return less often to the nest after the first chick has fledged and remaining chicks may starve...
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15 صفحه اولEffect of photoperiod on the adrenal activities of male rose ringed parakeet, Psittacala krameri.
Adult male rose ringed parakeets were exposed to very long photoperiod (22 hr L: 2 hr D) and very short photoperiod (2 hr L: 22 hr D) daily for 60 days during different phases of the annual testicular cycle. Adrenal activities of the experimental birds were compared with that of parallel held natural photoperiodic birds. Marked atrophy of adrenocortical cells was noted in the glands of long pho...
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ژورنال
عنوان ژورنال: Journal of Bioresource Management
سال: 2020
ISSN: 2309-3854
DOI: 10.35691/jbm.0202.0153