Behaving organisms are continually choosing. Recently the theoretical and empirical study
of decision making by behavioral ecologists and experimental psychologists have …

Publisher Summary This chapter deals with behavioral analysis and demonstrates free
choice preference. Once the preference is demonstrated, the next step is to explore some of …

The premaxilla of the fowl contains both mechano-receptors and pain receptors, and this
series of experiments was carried out to determine what effect removing either one-third or …

NDER conditions of ad libitum water intake, the metabolism and U balance of body water in
the fowl is invariably disregarded in nutritional specifications. It is only in situations of water …

The anesthesia of caged of birds is unique not only from the aspect of anatomy and
physiology, but also due to unique requirements for anesthetic equipment, monitoring, and …

Pigeons offered a choice among several different types of seed presented separately in
substantial quantities, show individual patterns of seed selection behavior which persist over …

1. Male birds of a laying strain had permanent catheters introduced into the hepatic portal
vein via the coccygeo‐mesenteric vein. 2. Infusions of 5 ml of 40, 100 or 150 g glucose/1 …

Publisher Summary The class Aves exhibits an enormous variety of morphological and
behavioral specializations for feeding, which are reflected most strikingly in the relation …

Lesions were placed stereotaxically in the principal sensory trigeminal nucleus (PrV), the
quinto‐frontal tract (QFT) and the nucleus basalis (NB) of the pigeon and their effects upon …

The present work describes a series of experiments designed to examine the possible role
of central 5-HT circuits in the control of feeding and drinking in pigeons. Acute effects (within …