Sunbirds’ tendency to hover: the roles of energetic rewards, inflorescence architecture and rain

Result code in IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F67985939%3A_____%2F21%3A00546941" target="_blank" >RIV/67985939:_____/21:00546941 - isvavai.cz</a>

Alternative codes found

RIV/00216208:11310/21:10440312

Result on the web

<a href="https://doi.org/10.1111/jav.02818" target="_blank" >https://doi.org/10.1111/jav.02818</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.1111/jav.02818" target="_blank" >10.1111/jav.02818</a>

Result language

angličtina

Original language name

Sunbirds’ tendency to hover: the roles of energetic rewards, inflorescence architecture and rain

Original language description

Although the Old World sunbirds are generally considered to be an ecological ana-logue of the New World hummingbirds, it is commonly believed that in contrast to hummingbirds, sunbirds perch while feeding. Nevertheless, recent studies have shown that Old World nectarivores hover while feeding more frequently than previously thought, and some Old World plants seem to have adapted to hovering bird pollina-tors. To reveal the importance of sunbird foraging behavior in nectar acquisition and to test whether this behavior is determined by plant architecture and rain intensity, we focused on the specialized West African pollination system of Impatiens sakeriana and its two major pollinators, the Cameroon sunbird Cyanomitra oritis and the north-ern double-collared sunbird Cinnyris reichenowi. C. oritis hovered more often than C. reichenowi while feeding on flowers, although both species were observed hovering reg-ularly. For both species, hovering reduced the feeding time, but this reduction and the consequent estimated changes in energetic intake were species-specific. We found that both floral pedicel and peduncle length, as well as precipitation, negatively affected the probability of C. reichenowi hovering but did not have any significant effect on the behavior of C. oritis. Our study demonstrates that hovering behavior is common in the studied sunbird taxa and that plant architecture and environmental factors can influ-ence sunbird foraging behavior. Nevertheless, the extent of hovering versus perching behavior, as well as the effects of biotic and abiotic factors, is species-specific.

Czech name

—

Czech description

—

Type

J_imp - Article in a specialist periodical, which is included in the Web of Science database

CEP classification

—

OECD FORD branch

10615 - Ornithology

Project

<a href="/en/project/GA18-10781S" target="_blank" >GA18-10781S: Organization of Afrotropical plant-bird pollination communities: the effects of altitude and seasonality</a><br>

Continuities

I - Institucionalni podpora na dlouhodoby koncepcni rozvoj vyzkumne organizace

Publication year

2021

Confidentiality

S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

Name of the periodical

Journal of Avian Biology

ISSN

0908-8857

e-ISSN

1600-048X

Volume of the periodical

52

Issue of the periodical within the volume

7

Country of publishing house

DK - DENMARK

Number of pages

10

Pages from-to

e02818

UT code for WoS article

000663861900001

EID of the result in the Scopus database

2-s2.0-85108268850