## 3 Results and Discussion
### Number of Times Laying Hens Visited the Nest Based on Video Evaluation
Examining the basic data further, it can be clearly seen that there was a statistically verifiable difference between the individual egg nests in the proportion of nest visit occasions for all three genotypes. The phenomenon observed during egg production can therefore be perceived here as well, where the laying hens preferred--or even avoided--the different nests based on the position of the nest; a nest preferred by others could cause more traffic, even a tumult, perhaps to a disproportionately greater extent, as would be expected based on the number of hens and available nests. The phenomenon could even be referred to as a'relative lack of nests', which can easily influence the increase in the number of eggs laid in the litter. It is a well-known fact that these housing systems still have problems that arise from the number of nests and the space per hen [17]. In order for pre-laying behavior to be properly expressed in cages, a sufficient number of suitable nests is needed [18]. According to other researchers [16], it is also logical, there are more potential nesting sites in a housing system than in the wild, hens cannot move away from their mates, so social factors may be more important in the expression of nesting behavior. Before laying eggs, laying hens are highly motivated to search for a suitable nest [19], if there is enough nesting space, hens spend more time resting and less time dust bathing than hens that do not have access to an egg nest [20]. Laying hens tend to prefer certain nests, so competition for egg nests may develop [8]. A limited number of nests increases the frequency of aggressive interactions [21] and a smaller holding area also accounts for this phenomenon [22]. Due to the group nesting tendency, we believe that in order to ensure the well-being of the laying hens and ensure uninterrupted production, it may be worth increasing even the size of the nests, as already noted by another researcher [23]; alternatively, the nests located in the middle of the rows should be made more attractive by changing their appearance, which can reduce group nesting, a suggestion that has also been previously mentioned by others [24]. In all three genotypes, the most visited egg nest was by far the one on the bottom left (it fell in the corner of the pen), which was nest number 8. The individuals of the Commercial hybrid 'produced' nearly one-third (29.1%) of the nest visits at nest number 8, which was significantly more compared with the visits to all other nests. It is known from several studies that in alternative housing systems, laying hens choose a nest every day--in which they lay their eggs from many identical nests--and often prefer the corner nest [25; 26]. In this regard, [PERSON] et al. [8] made an interesting observation that the brown hens preferred the nests on the right side and laid more eggs in that place, while the white hens preferred the compartments on the left side. These results clearly show that different genotypes show different nest use and egg-laying behavior. In the case of the Maternal genotype, it was observed that a significantly higher proportion of laying hens stayed in the leftmost nests in the upper level than in one of the middle or rightmost nests. In the case of the Patternal and Maternal genotypes, we found no statistically verifiable difference in the relative proportion of visits to the egg nests located on the lower level. As mentioned earlier, our tests were carried out in the third month of production, so it is likely that the level of group nesting may decrease as time progresses as other experiments note that the occurrence of group nesting is more frequent in the first half of the egg production period than in the second half [27]. To evaluate the results, it must be added that a hen could naturally visit the nests several times a day, and these nest visits did not always end with egg laying. Some laying hens, for example, could visit the nests on a very different number of occasions.