This will enable us to disentangle the mechanistic relationships between exposure to urban stressors, oxidative stress, DNA methylation and telomere dynamics during development and the consequences for growth and survival in an altricial bird
Food and water interrelations and the protein requirement for growth of an altricial bird
, the cockatiel (Nymphicus hollandicus).
Among many altricial bird
species, the young within a brood do not hatch simultaneously, but over a period of one or a few days (Clark and Wilson 1981, Magrath 1990, Stoleson and Beissinger 1995).
The order Galliformes is characterized by precocial offspring, with breeding systems that reduce parental investment comparing with altricial birds
(Royle et al.
Trees with dense vegetation cover would assure a good shelter for altricial birds
The critical period for birds of this sort, the so-called altricial birds
that spend some time in the nest, is to get them just before they are ready to leave the nest.
Nest predation as a selective factor in the evolution of developmental rates in altricial birds
In all altricial birds
, hatchlings come out with poorly formed pelvic bones that are still composed largely of cartilage.
In nestlings of altricial birds
, the mouth gape is usually brightly colored, and different marking patterns, which disappear when the bird is weaned, may be present, depending on the species.
Sibling competition, hatching asynchrony, incubation period, and lifespan in altricial birds
Among altricial birds
, variation in clutch size is enormous (Lack 1968).
It is unclear whether developmental trends in total leukocyte (white blood cell [WBC]) and differential lymphocyte (PropL) counts in peripheral blood of altricial birds
typically mirror the known ontogenetic increase in immunocompetence.