Skip to main content Accessibility help
×
Home

Extreme rainfall-related clutch size variation in the Critically Endangered Raso Lark Alauda razae of the arid Cape Verde islands

  • M. de L. BROOKE (a1)

Summary

The Raso Lark Alauda razae is a single island endemic confined to the island of Raso in the Cape Verde islands. It has been studied via short (11–20 day), similarly-timed visits every year from 2001 to 2017. These November/December visits have occurred towards the end of the main rainy period (August–October) in the Cape Verdes. Average clutch size ranged from zero (no nests found) to 3.57 in different years and was strongly correlated with rainfall in the three months preceding the year’s visit, but not with population size, which varied 25-fold during the study period. Since the nomadic pursuit of rain is not an option for the Raso Lark, the species adjusts clutch size according to conditions prevailing on Raso.

Copyright

Corresponding author

*Author for correspondence; e-mail; m.brooke@zoo.cam.ac.uk.

References

Hide All
Barba, E., Gil-Delgado, J. A. and Monrós, J. S. (1995) The costs of being late: Consequences of delaying Great Tit Parus major first clutches. J. Anim. Ecol. 64: 651842.
Brooke, M. de L., Flower, T. P., Campbell, E. M., Mainwaring, M. C., Davies, S. and Welbergen, J. A. (2012) Rainfall-related population growth and sex ratio change in the Critically Endangered Raso lark Alauda razae. Anim. Conserv. 16: 466471.
Brown, C. J., Bridgeford, P. A., Braine, S. G., Paxton, M. and Versfeld, W. (2015) Breeding data on the birds of Namibia: laying months, colony and clutch sizes and egg measurements. Ornithol. Observat. 6: 92196.
Coe, S. J. and Rotenberry, J. T. (2003) Water availability affects clutch size in a desert sparrow. Ecology 84: 32403249.
Dierickx, E. G. (2018) Population dynamics and population genetics of the Critically Endangered Raso lark: implications for conservation. PhD thesis, University of Cambridge, UK.
Donald, P. F. and Brooke, M. de L. (2006) An unlikely survivor: the peculiar natural history of the Raso Lark. Brit. Birds 99: 420430.
Donald, P. F., De Ponte, M., Pitta Groz, M. J. and Taylor, R. (2003) Status, ecology, behaviour and conservation of Raso Lark Alauda razae. Bird Conserv. Internatn. 13: 1328.
Grant, P. R., Grant, B. R., Keller, L. F. and Petren, K. (2000) Effects of El Niño events on Darwin’s finch productivity. Ecology 81: 24422457.
Hogstedt, G. (1981) Effect of additional food on reproductive success in the Magpie (Pica pica). J. Anim. Ecol. 50: 219229.
Lack, D. (1954) The Natural regulation of animal numbers. Oxford, UK: Clarendon Press.
Lack, D. (1968) Ecological adaptations for breeding in birds. London, UK: Methuen.
Lepage, D. and Lloyd, P. (2004) Avian clutch size in relation to rainfall seasonality and stochasticity along an aridity gradient across South Africa. Ostrich 75: 259268.
Lloyd, P. (1999) Rainfall as a breeding stimulus and clutch size determinant in South African arid-zone birds. Ibis 141: 637643.
Ndithia, H. K., Matson, K. D., Versteegh, M. A., Muchai, M. and Tieleman, B. I. (2017) Year-round breeding equatorial Larks from three climatically-distinct populations do not use rainfall, temperature or invertebrate biomass to time reproduction. PLoS One 12: e0175275.
Perrins, C. M. (1965) Population fluctuations and clutch size in the Great Tit, Parus major L. J. Anim. Ecol. 34: 601647.
Pitelka, F. A., Tomich, P. Q. and Treichel, G. W. (1955) Ecological relations of jaegers and owls as lemming predators near Barrow, Alaska. Ecol. Monogr. 25: 85117.
Suárez, F., Herranz, J., Yanes, M., Sánchez, A. M., García, J. T. and Manrique, J. (2005) Seasonal and interannual variability in laying date, clutch size, egg volume and hatching asynchrony of four lark species in Mediterranean Spain. Ardeola 52: 103117.
Willoughby, E. J. (1971) Biology of larks (Aves: Alaudidae) in the Central Namib Desert. Zool. Afr. 6: 133176.
Zann, R. A. (1994) Reproduction in a Zebra Finch colony in South-eastern Australia: the significance of monogamy, precocial breeding and multiple broods in a highly mobile species. Emu 94: 285299.
Type Description Title
WORD
Supplementary materials

Brooke et al. supplementary material
Table S1

 Word (17 KB)
17 KB

Extreme rainfall-related clutch size variation in the Critically Endangered Raso Lark Alauda razae of the arid Cape Verde islands

  • M. de L. BROOKE (a1)

Metrics

Altmetric attention score

Full text views

Total number of HTML views: 0
Total number of PDF views: 0 *
Loading metrics...

Abstract views

Total abstract views: 0 *
Loading metrics...

* Views captured on Cambridge Core between <date>. This data will be updated every 24 hours.

Usage data cannot currently be displayed