Reproductive Success and Colony-Site Tenacity in Caspian Terns

The Auk ◽  
1988 ◽  
Vol 105 (2) ◽  
pp. 339-344 ◽  
Author(s):  
Francesca J. Cuthbert
Keyword(s):  
Reproductive Success ◽  
Caspian Terns ◽  
Site Tenacity ◽  
Colony Site

Colony-site Tenacity and Egg Color Crypsis in the Gull-billed Tern

Waterbirds ◽  
2004 ◽  
Vol 27 (1) ◽  
pp. 21-30 ◽  
Author(s):  
Juan M. Sánchez ◽  
Casimiro Corbacho ◽  
Antonio Muñoz del Viejo ◽  
Deseada Parejo
Keyword(s):  
Site Tenacity ◽  
Colony Site

The adaptive value of polygyny in marsh-nesting red-winged blackbirds; renesting, territory tenacity, and mate fidelity of females

1981 ◽  
Vol 59 (12) ◽  
pp. 2284-2296 ◽  
Author(s):  
Jaroslav Picman
Keyword(s):  
Reproductive Success ◽  
Breeding Season ◽  
Mating Success ◽  
Nest Defense ◽  
Extrinsic Factors ◽  
Mate Fidelity ◽  
Adaptive Value ◽  
Harem Size ◽  
Site Tenacity ◽  
Males And Females

Some female red-winged blackbird individuals laid as many as four or five clutches in a single breeding season. Renesting attempts followed nesting failures and high renesting rates were characteristic of unsuccessful females. Most renesting female redwings exhibited a strong territory tenacity. However, some females renested in a different territory and I tried to determine why these individuals moved. Since certain birds always moved more between their renesting attempts than others, the female tendency to move is probably intrinsically determined. Extrinsic factors such as the density of nest predators, male age, and harem size did not influence female movements.The strong site tenacity of female redwings has probably been favoured by (1) advantages of familiarity with the habitat, and (2) strong selection on females for mate and harem fidelity which can be achieved most efficiently when males and females return to their original territories. Renesting with the same male and females from the same harem should increase female's reproductive success because cooperation in nest defense is more efficient between familiar birds. The strong tendency of females to renest in the same area in consecutive years significantly influences mating success of males because new males "inherit" harems of previous territory holders.

Effect of Habitat Decimation on Ring-Billed Gull Colony- and Nest-Site Tenacity

The Auk ◽  
1982 ◽  
Vol 99 (2) ◽  
pp. 328-331 ◽  
Author(s):  
Linda K. Southern ◽  
William E. Southern
Keyword(s):  
Nest Site ◽  
Breeding Habitat ◽  
Factors Affecting ◽  
Return Rates ◽  
Habitat Alterations ◽  
Larus Delawarensis ◽  
Proximate Factors ◽  
Site Tenacity ◽  
Colony Site

Abstract Colony-site tenacity and nest-site tenacity have been documented in several larids, but the proximate factors affecting fidelity remain poorly understood. We examined the effect of severe breeding-habitat alterations (bulldozing) on site tenacity in Ring-billed Gulls (Larus delawarensis). Return rates of wing-tagged adults were similar in bulldozed and unchanged parts of the colony site. In bulldozed areas, however, most ring-bills abstained from nesting; those that did breed showed an increased tendency to move to a different nest site.

Sign in / Sign up

Export Citation Format

Share Document