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female House Sparrow - Passer domesticus (5 months old),站酷海洛,一站式正版视觉内容平台,站酷旗下品牌.授权内容包含正版商业图片、艺术插画、矢量、视频、音乐素材、字体等,已先后为阿里巴巴、京东、亚马逊、小米、联想、奥美、盛世长城、百度、360、招商银行、工商银
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Scarpulla, Eugene J.Maryland Birdlife
The study was conducted in a captive house sparrow ( Passer domesticus ) population over several years under constant environmental conditions. This multi-brooded species lays eggs which vary in ground colour (biliverdin pigment) and in the intensity and distribution of brownish-red spots (...
Maney et al.36 suggested that in white‐ throated sparrow (Zonotrichia albicollis) females, a song‐induced gene such as zenk (egr‐1) induction in the audi- tory system is selective for song only when plasma estradiol exceeds non‐breeding levels36. This finding indicated that the sensitivity...
Photo Courtesy: Axelle/Bauer-Griffin/Getty Images Although Lawrence wrapped upThe Hunger Gamesfranchise four years ago, she has stayed plenty busy with films likeRed SparrowandMother. Don’t forget about the huge contract she recently landed with Dior either. It’s no wonder she has a whopping...
Egbert J, Jackson MF, Rodgers BD, Schwabl H (2013) Between-female variation in house sparrow yolk testosterone concentration is nega- tively associated with CYP19A1 (aromatase) mRNA expression in ovarian follicles. Gen Comp Endocrinol 183:53-62...
Investigates the endogenous circadian rhythms involved in photoperiodic time measurement in female house sparrow, Passer domesticus. Importance of light as a source of information in reproduction and associated events; Changes in ovarian mass and plasma levels of estradiol in house sparrows; Responsiveness...