Heterophil-to-lymphocyte ratio varies with habitat fragmentation and canopy cover in a tropical understory insectivore [0.03%]
栖息地破碎化和林冠覆盖影响热带底层食虫动物的异嗜性白细胞比例
Vincent Otieno Onyango,Magdalena Ginko,George Gatere Ndiritu et al.
Vincent Otieno Onyango et al.
Habitat fragmentation and degradation are major problems in tropical forests, leading to a decline in biodiversity. However, it is often unclear which aspects of habitat change are responsible for the decline of specific species. Physiologi...
Seasonal dynamics of female bill colouration: an observation in captive House Sparrows (Passer domesticus) [0.03%]
雌鸟喙色的季节性变化——家燕观测记录
Anastasia Caluja,Sebastian G Vetter-Lang,Lisamarie Lehner et al.
Anastasia Caluja et al.
Bill colouration is a highly variable trait with the potential to rapidly change over time. We observed strong interindividual and seasonal variation in the bill colour of captive female House Sparrows (Passer domesticus) and describe two c...
Aggressive behavior as a predictor of home range size: findings from both range-restricted and widespread Darwin's finch species [0.03%]
攻击性行为作为预测栖息范围大小的指标——来自达尔文雀科狭域种及广布种的研究结果
Jefferson García-Loor,Mario Gallego-Abenza,Andrew C Katsis et al.
Jefferson García-Loor et al.
Information about an animal's home range (the geographical area in which it accesses resources for survival and reproduction) is vital broadly for understanding animal behavior and specifically for developing conservation management plans. ...
Melanin-based plumage coloration and melanin content in organs in the barn owl [0.03%]
猫头鹰中基于黑色素的羽毛颜色与器官中的黑色素含量
Alexandre Roulin,Sylvain Dubey,Shosuke Ito et al.
Alexandre Roulin et al.
Although the evolutionary ecology of melanin pigments and melanin-based coloration has been studied in great details, particularly in birds, little is known about the function of melanin stored inside the body. In the barn owl Tyto alba, in...
Age effects in Darwin's finches: older males build more concealed nests in areas with more heterospecific singing neighbors [0.03%]
达尔文雀中的年龄效应：在更多异种鸣唱邻居的区域中，老雄鸟筑造更隐蔽的巢穴
Antonia C Huge,Nicolas M Adreani,Diane Colombelli-Négrel et al.
Antonia C Huge et al.
Nesting success tends to increase with age in birds, in part because older birds select more concealed nest sites based on experience and/or an assessment of prevailing predation risk. In general, greater plant diversity is associated with ...
Thomas Bugnyar
Thomas Bugnyar
Ravens and other corvids are renowned for their 'intelligence'. For long, this reputation has been based primarily on anecdotes but in the last decades experimental evidence for impressive cognitive skills has accumulated within and across ...
Kea, bird of versatility. Kea parrots (Nestor notabilis) show high behavioural flexibility in solving a demonstrated sequence task [0.03%]
kea鹦鹉，善变的鸟儿。 Nester notabilis展示了一种在完成演示序列任务时高度的行为灵活性。
Elisabeth Suwandschieff,Ludwig Huber,Thomas Bugnyar et al.
Elisabeth Suwandschieff et al.
Social learning is an important aspect of dealing with the complexity of life. The transmission of information via the observation of other individuals is a cost-effective way of acquiring information. It is widespread within the animal kin...
Parental food provisioning and nestling growth under Philornis downsi parasitism in the Galapagos Green Warbler-Finch, classified as 'vulnerable' by the IUCN [0.03%]
受Philornis downsi寄生的加拉帕戈斯白冠雀巢幼鸟生长及其亲鸟喂食行为的研究（IUCN极危物种）
Courtney L Pike,Barbara Kofler,Heinz Richner et al.
Courtney L Pike et al.
In the Galapagos Islands, many endemic landbird populations are declining due to habitat degradation, food availability, introduced species and other factors. Given nestlings typically lack efficient defense mechanisms against parasites, he...
Community engagement and data quality: best practices and lessons learned from a citizen science project on birdsong [0.03%]
社区参与和数据质量：鸟类声音公民科学项目中的最佳实践与经验教训
Denise Jäckel,Kim G Mortega,Sarah Darwin et al.
Denise Jäckel et al.
Citizen Science (CS) is a research approach that has become popular in recent years and offers innovative potential for dialect research in ornithology. As the scepticism about CS data is still widespread, we analysed the development of a 3...
Herwig A Grogger,Martin Gossar,Michael Makovec et al.
Herwig A Grogger et al.
A blower-type wind tunnel for physiological bird flight experiments has been developed, constructed and evaluated. Since the birds to be investigated are rather big (Northern Bald Ibis, Geronticus eremita), the cross-sectional area of the t...