Birds during migration must satisfy the high energy and nutrient demands associated with
repeated, intensive flight while often experiencing unpredictable variation in food supply and …

The cost of compound feed is a constraint in intensive fish and poultry farming, contributing
60-80% of the total production costs, 70% of which is due to fish and soy meal used as …

We measured the activities of eight digestive enzymes in four species of herbivorous and
carnivorous prickleback fishes and determined the effects of ontogeny, diet, and phylogeny …

MANY STUDIES in the last 20 years have examined the basis of fruit choice in birds. It is
somewhat frustrating that results of those studies are often inconsistent. Different species …

Failure to provision tissues with an appropriate balance of nutrients engenders fitness costs.
Maintaining nutrient balance can be achieved by adjusting the selection and consumption of …

We review digestion and osmoregulation in the avian gut, with an emphasis on the ways
these different functions might interact to support or constrain each other and the ways they …

Few studies provide empirical evidence for phenotypic plasticity's role in the evolution of
novel traits. One way to do so is to test whether latent plasticity is present in an ancestor that …

The niche variation hypothesis (NVH) predicts that populations with broader niches should
exhibit greater between‐individual diet variation or individual specialization (IS) relative to …

The arboreal marsupial monito del monte (genus Dromiciops, with two recognized species)
is a paradigmatic mammal. It is the sole living representative of the order Microbiotheria, the …

Alterations to ratios of protein and fiber in an organism's diet have been shown to structurally
and functionally alter its individual digestive physiology. However, it is unclear how these …