Here's a start. This is an excerpt from a meeting on the topic. Pay special attention to the final paragraph where they talk about steps you can take to minimize egg laying. It's about cockatiels, but the same information applies.
"Medical intervention generally is guided along the ethical guidelines of “Least intrusive, most effective”. A hierarchy of treatment options that progressively move up this scale, as-indicated in specific cases is vastly important. Many of the more intrusive treatment options, when not preceded by some of the more foundational and less-invasive recommendations for excessive egg laying should be realistically predisposed to a higher degree of failure. Degrees of intrusiveness of a recommended treatment can be tested by the amount of induced stress, physical pain, and cost. In addition, treatments that require repeated administrations should be challenged for their compatibility with this hierarchy in-toto. Degrees of effectiveness can be tested by their short term and long term effect at directly achieving their goal, as well as their effect at preventing recurrence in the future. Reduction of the probability of potential side effects and their adverse consequences on the health and welfare of the bird is also a very important test of effectiveness of a treatment.
Many young parrots sold as pets are “mentored” and taught by their new owners only one form of social interactive skills (pair bond enrichment behaviors), as opposed to the typical array of social skills that would have been taught by the parents of their wild counterparts. Deficits in normal social interaction skills, foraging activities, learned inappropriate pair bonding behaviors, inappropriate diets, the provision of nesting environments and other factors are common. The first and foremost component of healthcare and prevention of excessive egg laying comes from the identification of existing risk factors at routine examination, client education, appropriate recommendations, and careful follow up on recommended actions with owners. Recommendations for enrichment of normal lifestyles, positive reinforcement training for guiding flock interactive behaviors, dietary recommendations, foraging training, and cage environment improvements all are essential foundational preventative maneuvers. In essence, enrichment of these types of behaviors is a key aspect of the routine annual examination.
Environmental and Behavioral Interventions
In the presence of excessive egg-laying in companion birds, a series of recommendations and training / enrichments should be outlined for bird owners. Specific recommendations are guided by signalment, history and physical examination findings. Although many of the needed recommendations require the “removal” of reproductively associated stimuli and behaviors, more ethical recommendations should also concurrently package and emphasize the training of normal behaviors to replace what is removed. The stress that can be generated by environmental and behavioral deprivation, although it can add to short-term “effectiveness”, should be viewed as less ethical than a behavior-change strategy that is based on differential reinforcement of alternative behaviors. Environmental and behavioral deprivation can easily result in an increase in behavioral problems, ultimately adversely affecting the health and welfare of these patients. In most circumstances and when applied correctly, environmental and behavioral interventions should be viewed as most ethical, least intrusive and most effective treatments for uncomplicated chronic egg laying.
Environmental stimuli may need to be altered, and every recommendation should be carefully balanced with an enrichment or differential reinforcement plan for alternative behaviors. The photoperiod may need to be altered and reduced for some species. Nest sites, toys, and other items to which the bird has a sexual affinity should be removed from the enclosure. Access to a nesting environment (shredded papers, a box, or other dark cavities) should be prohibited. In the event that a pet bird is showing nesting behavior and laying eggs in a designated site within the cage environment, removal of eggs from the nest should be avoided for the normal incubation period for each species to discourage the hen from laying another clutch. Any perceived or actual mate should be removed from the cage or room environment. In some situations, and with some species such as the Cockatiel, visual and auditory separation from a “mate” may be necessary. A “one-person bird,” with only a single household member who exclusively handles and cares for the bird should be potentially viewed as an established “mate relationship”, which may serve as a trigger for reproductively driven behaviors and activities. Stimulatory petting by the owner, such as rubbing the pelvis, dorsum, and cloacal regions should be stopped. “Flock” interactive behaviors should be encouraged in preference to one person or “mate” interactions in the home. The cage location and internal set up (perches, toys, etc) should be changed and rotated periodically to provide a “new or changing” environment that is less stable and less reproductively stimulating. Inappropriate nutrition that is identified should be corrected to improve the hen’s dietary plane to decrease the severity of metabolic drain. Dietary alteration with a reduction of caloric intake appears to significantly reduce or stop egg production with many companion parrot species, as well as enable training and behavior-change strategies. "