Summary
Cliff swallows (Hirundo pyrrhonota) in SW Nebraska, USA, nest in colonies and associate in groups away from their colonies. The degree to which group-living in this species affords advantages in the avoiding of predators was examined. The distance from the colony at which a snake predator was detected increased with colony size. In flocks away from the colonies, group vigilance increased, but the time that each individual spent vigilant decreased, with flock size. As a result, birds in large flocks had more time for preening and mud-gathering. Cliff swallows did not effectively mob predators and thus were unable to deter predators regardless of group size. Nesting within each colony was highly synchronous, but when the effects of ectoparasites on nesting success were removed, individuals nesting during the peak breeding period were no more successful than those nesting before or after the peak. This suggests that swamping of predators is unlikely in cliff swallow colonies. Nests at the edges of colonies were more likely to be preyed upon than nests nearer the center, suggesting that colonial nesting conferred some selfish herd benefits. Overall reproductive success did not vary with colony size. While cliff swallows receive some anti-predator benefits by living in groups, the avoidance of predators is probably not a major selective force for the evolution of coloniality in this species.
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References
Andersson M, Wiklund CG (1978) Clumping versus spacing out: experiments on nest predation in fieldfares (Turdus pilaris). Anim Behav 26:1207–1212
Arnold SJ, Wasserug RJ (1978) Differential predation on metamorphic anurans by garter snakes (Thamnophis): social behavior as a possible defense. Ecology 59:1014–1022
Bent AC (1942) Life histories of North American flycatchers, larks, swallows, and their allies, US Natl Mus Bull 179
Bertram BCR (1980) Vigilance and group size in ostriches. Anim Behav 28:278–286
Brown CR (1985) The costs and benefits of coloniality in the cliff swallow. Ph.D. dissertation, Princeton Univ, Princeton, NJ, USA
Brown CR (1986) Cliff swallow colonies as information centers. Science 234:83–85
Brown CR, Brown MB (1986) Ectoparasitism as a cost of coloniality in cliff swallows (Hirundo pyrrhonota). Ecology 67:1206–1218
Brown CR, Hoogland JL (1986) Risk in mobbing for solitary and colonial swallows. Anim Behav 34:1319–1324
Burton PJK, Thurston MH (1959) Observations on Arctic terns in Spitsbergen. British Birds 52:149–161
Coulson JC (1968) Differences in the quality of birds nesting in the center and on the edges of a colony. Nature 217:478–479
Darling FF (1938) Bird flocks and the breeding cycle. Cambridge Univ Press, Cambridge, England
Dominey WJ (1981) Anti-predator function of bluegil sunfish nesting colonies. Nature 290:586–588
Emlen JT Jr (1941) Cliff swallow colonies of the central Sacramento valley in 1941. Condor 43:248
Emlen JT Jr (1952) Social behavior in nesting cliff swallows. Condor 54:177–199
Emlen JT Jr (1954) Territory, nest building, and pair formation in the cliff swallow. Auk 71:16–35
Emlen ST, Demong NJ (1975) Adaptive significance of synchronized breeding in a colonial bird: a new hypothesis. Science 188:1029–1031
Estes RD (1976) The significance of breeding synchrony in the wildebeest. East Afr Wildlife J 14:135–152
Feare CJ (1976) The breeding of the sooty ternSterna fuscata in the Seychelles and the effects of experimental removal of its eggs. J Zool 179:317–360
Ganier AF (1962) Snakes as climbers. Migrant 33:53
Gochfeld M (1980) Mechanisms and adaptive value of reproductive synchrony in colonial seabirds. In: Burger J, Olla BL, Winn HE (eds) Behavior of marine animals, current perspectives in research. Plenum Press, New York, pp 207–270
Grant GS, Quay TL (1977) Breeding biology of cliff swallows in Virginia. Wilson Bull 89:286–290
Grinnell J, Miller AH (1944) The distribution of the birds of California. Pacific Coast Avifauna 27:1–608
Gross MR, MacMillan AM (1981) Predation and the evolution of colonial nesting in bluegill sunfish (Lepomis macrochirus). Behav Ecol Sociobiol 8:163–174
Hamilton WD (1971) Geometry for the selfish herd. J Theor Biol 31:295–311
Hoogland JL (1981) The evolution of coloniality in white-tailed and black-tailed prairie dogs (Sciuridae:Cynomys leucurus andC. ludovicianus). Ecology 62:252–272
Hoogland JL, Sherman PW (1976) Advantages and disadvantages of bank swallow (Riparia riparia) coloniality. Ecol Monogr 46:33–58
Hopla CE, Loye JE (1983) The ectoparasites and microorganisms associated with cliff swallows in west-central Oklahoma. I. Ticks and fleas. Bull Soc Vector Ecol 8:111–121
Horn HS (1968) The adaptive significance of colonial nesting in Brewer's blackbird (Euphages cyanocephalus). Ecology 49:682–694
Kruuk H (1964) Predators and anti-predator behaviour of the black-headed gull (Larus ridibundus L.). Behav Suppl 11:1–129
Madigan S (1983) PC statistician, the statistical report program. Human Systems Dynamics, Northridge, CA, USA
Mayhew WW (1958) The biology of the cliff swallow in California. Condor 60:7–73
Nie NH, Hull CH, Jenkins JG, Steinbrenner K, Bent DH (1975) Statistical package for the social sciences, 2nd ed. McGraw-Hill, New York
Patterson IJ (1965) Timing and spacing of broods in the black-headed gullLarus ridibundus. Ibis 107:433–459
Pearson TG (ed) (1917) Birds of America, Vol 3. Univ Society, New York
Pulliam HR, Caraco T (1984) Living in groups: is there an optimal group size? In: Krebs JR, Davies NB (eds) Behavioural ecology, and evolutionary approach, pp 122–147. Sinauer Associates. Sunderlund, MA, USA
Robinson SK (1985) Coloniality in the yellow-rumped cacique as a defense against nest predators. Auk 102:506–519
Rood JP (1983) Banded mongoose rescues pack member from eagle. Anim Behav 31:1261–1262
Samuel DE (1971) The breeding biology of barn and cliff swallows in West Virginia. Wilson Bull 83:284–301
Shaw CE, Campbell S (1974) Snakes of the American west. Knopf, New York
Siegel S (1956) Nonparametric statistics for the behavioral sciences. McGraw-Hill, New York
Siegfried WR (1972) Breeding success and reproductive output of the cattle egret. Ostrich 43:43–55
Sutton GM (1967) Oklahoma birds. Univ Oklahoma Press, Norman, OK, USA
Taylor RH (1962) The Adelie penguinPygoscelis adeliae at Cape Royds. Ibis 104:176–204
Tenaza RR (1971) Behavior and nesting success relative to nest location in Adelie penguins (Pygoscelis adeliae). Condor 73:81–92
Thompson BC, Turner CL (1980) Bull snake predation at a cliff swallow nest. Murrelet 61:35–36
Veen J (1977) Functional and causal aspects of nest distribution in colonies of the sandwich tern (Sterna s. sandvicensis Lath.). Behav Suppl 20:1–193
Wilkinson GS, English-Loeb GM (1982) Predation and coloniality in cliff swallows (Petrochelidon pyrrhonota). Auk 99:459–467
Withers PC (1977) Energetic aspects of reproduction by the cliff swallow. Auk 94:718–725
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Brown, C.R., Brown, M.B. Group-living in cliff swallows as an advantage in avoiding predators. Behav Ecol Sociobiol 21, 97–107 (1987). https://doi.org/10.1007/BF02395437
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DOI: https://doi.org/10.1007/BF02395437