干旱区生态环境知识资源中心(Arid): Breeding biology of the African Pygmy Falcon: long-term variation and seasonal decline in breeding performance of an arid zone raptor

Arid

DOI	10.1007/s10336-023-02065-9
	Breeding biology of the African Pygmy Falcon: long-term variation and seasonal decline in breeding performance of an arid zone raptor
	Olubodun, Olufemi P.; Lowney, Anthony M.; Bolopo, Diana; Thomson, Robert L.
通讯作者	Olubodun, OP
来源期刊	JOURNAL OF ORNITHOLOGY
ISSN	2193-7192
EISSN	2193-7206
出版年	2023
卷号	164 期号:3 页码:689-704
英文摘要	Birds of prey are apex predators and understanding their life history can serve as a valuable baseline for investigating their ecological role. Pygmy Falcons (Polihieraxsemitorquatus), Africa's smallest diurnal raptor, have evolved to be obligate associates of Sociable Weaver (Philetairussocius) colonies throughout their southern African range. As a predator, Pygmy Falcons likely impact prey communities in this system including their host and other colony associates. However, no study has explored their breeding biology in detail using long-term data. We provide results from 10 years of data collected between 2011 and 2020. We followed 66 unique Pygmy Falcon territories and 323 breeding attempts in the Kalahari, South Africa. We explored annual variation in the population density of Pygmy Falcons and investigated between- and within-season variation in reproductive investment and output. The highest average density was recorded in 2015 and the lowest in 2019 and 2020. Our results show that the breeding occurs between early austral spring (August) and late summer (February), with a peak from September to December. The maximum and most frequent clutch size was three eggs and falcons usually initiated only one breeding attempt (but up to three) in a season. The incubation and nestling periods lasted on average 33 (+/- SD 4) and 37 (+/- 5) days, respectively. A three-egg clutch size and number of fledglings produced varied between seasons, and breeding success showed a seasonal decline across the breeding season. Falcons were 7 times less likely to lay a 3-egg clutch in 2019 than in 2011 and 2012, and breeding attempts initiated in September were 3.4 times more likely to be successful than those initiated in November. Predation accounted for 49.5% of breeding failures. Our results show significant variation in the breeding parameters of these falcons, but further studies are needed to understand what drives these variations.
英文关键词	Raptor breeding Arid zone birds Nesting association Long-term study African raptors
类型	Article
语种	英语
开放获取类型	hybrid
收录类别	SCI-E
WOS记录号	WOS:000960839500001
WOS关键词	SOCIABLE WEAVER NESTS ; AVIAN CLUTCH SIZE ; REPRODUCTIVE SUCCESS ; SPATIAL-DISTRIBUTION ; HABITAT SELECTION ; EGG SIZE ; BIRDS ; PREDATION ; EVOLUTION ; BEHAVIOR
WOS类目	Ornithology
WOS研究方向	Zoology
资源类型	期刊论文
条目标识符	http://119.78.100.177/qdio/handle/2XILL650/397498
推荐引用方式 GB/T 7714	Olubodun, Olufemi P.,Lowney, Anthony M.,Bolopo, Diana,et al. Breeding biology of the African Pygmy Falcon: long-term variation and seasonal decline in breeding performance of an arid zone raptor[J],2023,164(3):689-704.
APA	Olubodun, Olufemi P.,Lowney, Anthony M.,Bolopo, Diana,&Thomson, Robert L..(2023).Breeding biology of the African Pygmy Falcon: long-term variation and seasonal decline in breeding performance of an arid zone raptor.JOURNAL OF ORNITHOLOGY,164(3),689-704.
MLA	Olubodun, Olufemi P.,et al."Breeding biology of the African Pygmy Falcon: long-term variation and seasonal decline in breeding performance of an arid zone raptor".JOURNAL OF ORNITHOLOGY 164.3(2023):689-704.