Category: Ciconiidae

ORGANOCHLORINE RESIDUES AND EGGSHELL THINNING IN WOOD STORKS AND ANHINGAS

Wood Stork (Mycteria americana) Science Article 1 abstract All 10 Wood Stork eggs collected at Merritt Island National Wildlife Refuge in 1973 contained residues of DDE (geometric mean 4.0 ppm wet weight) and PCBs (1.2 ppm). Nine other organochlorines were found at lower frequencies in the eggs. Eggshells from the recent period were 8.9% thinner […]

Condition-dependent parental effort and reproductive performance in the White Stork Ciconia ciconia

White Stork (Ciconia ciconia) Science Article 10 abstract Relationships between the parental quality and reproductive performance have been studied in many birds, but not in Ciconiiformes so far. We hypothesised that parental condition of White Storks Ciconia ciconia affects both parental care and breeding success. To examine our hypothesis we assessed body mass of White […]

Feeding in urban refuse dumps: ingestion of plastic objects by the White Stork (Ciconia ciconia)

White Stork (Ciconia ciconia) Science Article 2 abstract […]. According to our data, refuse dumps provide a staple food for storks throughout the year, but expose some birds, especially the juveniles, to the potential consumption of plastics and other potentially dangerous materials. Due to the healthy and increasing Spanish White Stork population to a certain […]

Variable inter-annual relationships between T-cell mediated immunity and individual traits in White Storks

White Stork (Ciconia ciconia) Science Article 4 abstract Aims: The PHA skin-testing technique has become a widespread way of studying the ecological and evolutionary implications of T-cell mediated immunity (CMI) in birds. Several breeding and individual traits have been found to be related to CMI. However, it is not known how consistent these relationships are […]

Variation of primary production during winter induces synchrony in survival rates in migratory white storks Ciconia ciconia

White Stork (Ciconia ciconia) Science Article 12 abstract The environmental conditions that migratory birds experience during their stay at different locations throughout the year can have significant impact on the variation of annual survival rates. Because migrants often crowd during non-breeding, environmental conditions can affect survival rates of individuals originating from different breeding populations, thus […]

Development of thermoregulatory ability during ontogeny in the White Stork Ciconia ciconia

White Stork (Ciconia ciconia) Science Article 1 abstract The development of thermoregulation abilities in White Stork Ciconia ciconia nestlings was examined. Our results showed that body mass, and not age, was the best predictor for thermoregulatory ability despite what was found in passerines. White Stork nestlings did not develop their thermoregulatory abilities abruptly since their […]