Effects of forest spraying with two application rates of cypermethrin on food supply and on breeding success of the blue tit (Parus caeruleus)

1992 ◽  
Vol 11 (9) ◽  
pp. 1271-1280 ◽  
Author(s):  
Juan Alberto Pascual ◽  
Salvador J. Peris
Keyword(s):  
Breeding Success ◽  
Food Supply ◽  
Parus Caeruleus ◽  
Blue Tit ◽  
Application Rates

Food Supply, Territory Quality, and Reproductive Timing in the Blue Tit (Parus Caeruleus)

Ecology ◽  
1995 ◽  
Vol 76 (6) ◽  
pp. 1804-1812 ◽  
Author(s):  
Erik Svensson ◽  
Jan-Ake Nilsson
Keyword(s):  
Food Supply ◽  
Parus Caeruleus ◽  
Reproductive Timing ◽  
Blue Tit ◽  
Territory Quality

Evaluation of biochemical effects related to perfluorooctane sulfonic acid exposure in organohalogen-contaminated great tit (Parus major) and blue tit (Parus caeruleus) nestlings

Chemosphere ◽  
2005 ◽  
Vol 61 (11) ◽  
pp. 1558-1569 ◽  
Author(s):  
Philippe Tony Hoff ◽  
Kristin Van de Vijver ◽  
Tom Dauwe ◽  
Adrian Covaci ◽  
Johan Maervoet ◽  
...  
Keyword(s):  
Sulfonic Acid ◽  
Parus Major ◽  
Great Tit ◽  
Acid Exposure ◽  
Parus Caeruleus ◽  
Blue Tit ◽  
Biochemical Effects

Two blue tit Parus caeruleus populations from Corsica differ in social dominance

2002 ◽  
Vol 33 (4) ◽  
pp. 446-450 ◽  
Author(s):  
Céline Braillet ◽  
Anne Charmantier ◽  
Frédéric Archaux ◽  
Anabelle Dos Santos ◽  
Philippe Perret ◽  
...  
Keyword(s):  
Social Dominance ◽  
Parus Caeruleus ◽  
Blue Tit

TWO DISTINCT SONG POPULATIONS OF BLUE TIT PARUS CAERULEUS IN THE FRENCH MEDITERRANEAN

Bioacoustics ◽  
1998 ◽  
Vol 9 (1) ◽  
pp. 1-16 ◽  
Author(s):  
CLAIRE DOUTRELANT ◽  
THIERRY AUBIN ◽  
SIMON HITIER ◽  
MARCEL M. LAMBRECHTS
Keyword(s):  
Parus Caeruleus ◽  
Blue Tit

scholarly journals Population Studies on the Southern Black-Backed Gull

2021 ◽  
Author(s):  
◽  
Robin Alexander Fordham
Keyword(s):  
Breeding Success ◽  
Food Supply ◽  
Population Studies ◽  
Ecological Studies ◽  
Seasonal Fluctuations ◽  
Age Composition ◽  
Feeding Sites ◽  
Larus Dominicanus ◽  
The Social ◽  
Present Distribution

<p>An account is given of ecological studies on the Southern Black-backed Gull Larus dominicanus Licht in which attention is directed to the structure and balance of the Wellington population. This population is large; in the 1963-64 season more than 5,600 pairs were breeding in the study area, and the peak non-breeding season population in 1964 exceeded 12,000 birds. Its growth has been closely associated with the increase of the human population, and the present distribution and dispersal of gulls is strongly influenced by the distribution of " artificial" feeding sites such as refuse tips and meatworks. The population is composed of breeding colonies, night roosting flocks and daily communal flocks which are inter-related by the social activities and dispersal of the birds. Thus the population is more or less integrated, rather than simply comprising discrete geographic units. Seasonal fluctuations in size and age composition of communal flocks are discussed. Breeding success varies between colonies. It is affected by mammalian predation in some, and by drowning in others, while the largest colonies are comparatively safe for breeding birds. The rapid growth of the whole population in the last five to 10 years appears to have some influence on nesting density, clutch size, spread of laying and overall breeding success. In recent years production of young has been twice that required to maintain the population which has grown at the rate of not less than 7.2% annually. Mortality of banded gulls inside and outside the colony is described and the influence of several factors on chick mortality examined. The principal factor limiting the population appears to be the food supply in relation to the number of birds. When numbers increase and the food supply diminishes, major regulation of the population is apparently achieved in the colony by predation (but not cannibalism) of young by adults. Dispersal of banded gulls from the Wellington colonies is very restricted.</p>

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