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  1. Influence of human disturbance on Western Chimpanzee (Pan troglodytes verus) nesting behavior in a savanna mosaic habitat, southeastern Senegal

    Full-text: Available

    | Contributor(s):: Kristine Micheletti

    The human population continues to grow worldwide at an alarming rate, and, with this growth, comes expansion into new areas. These expansions can come with actions, like logging, mining, and agriculture that are harmful to the environment and the species inhabiting it. The critically endangered...

  2. Effects of different cage sizes and nest settings on laying hen nesting behavior and the proportion of dirty eggs in furnished cages

    | Contributor(s):: Sun, Hanqing, Zhao, Peng, Su, Yingying, Zhao, Qian, Li, Xiang, Bao, Jun

    Furnished cages may promote laying hen welfare more than the traditional cage, but the high proportion of dirty eggs in the furnished cage system could directly affect the exterior quality of eggs, reducing the economic advantage of the furnished cage production system. The problem of the high...

  3. Titrating the preferences of altered lighting against temperature in female CD-1 laboratory mice, Mus musculus

    | Contributor(s):: Davis, Haley J., Barabas, Amanda J., Gaskill, Brianna N.

    Aspects of the laboratory are aversive to mice, such as being housed under bright lights and at temperatures below their thermal comfort, causing stress and poor welfare. While murine thermal preferences are well understood, light preferences in mice are under studied. To address this gap,...

  4. Evidence of competition for nest sites by laying hens in large furnished cages

    | Contributor(s):: Hunniford, Michelle E., Torrey, Stephanie, Bédécarrats, Gregoy, Duncan, Ian J. H., Widowski, Tina M.

    Furnished cages are designed to accommodate behaviour considered important to laying hens, particularly nesting behaviour. Few researchers have studied the degree of competition for nest sites or the extent to which the amount of nest space affects nesting behaviour in large furnished cages. We...

  5. Nest sharing under semi-natural conditions in laying hens

    | Contributor(s):: Riber, Anja Brinch

    Under natural conditions, the feral hen (Gallus gallus domesticus) will choose a nest location away from the flock, whereas under commercial conditions, the domestic hen will often choose the same nest as other hens have used or are still using. Simultaneous nest sharing causes several welfare...

  6. Gregarious nesting—An anti-predator response in laying hens

    | Contributor(s):: Riber, Anja Brinch

    Gregarious nesting can be defined as a behaviour that occurs when a laying hen (Gallus gallus domesticus) given the choice between an occupied and an unoccupied nest site chooses the occupied nest site. It occurs frequently in flocks of laying hens kept under commercial conditions, contrasting...

  7. Effect of heterogeneity of nest boxes on occurrence of gregarious nesting in laying hens

    | Contributor(s):: Clausen, Tina, Riber, Anja Brinch

    Gregarious nesting, where hens select already occupied nest boxes even when other nest boxes are unoccupied, is an unwanted behaviour in laying hens that may reduce animal welfare and pose a financial cost to the producer. It has been suggested that gregarious nesting is caused by the...

  8. Laying hens' preferences for nest surface type are affected by enclosure

    | Contributor(s):: Hunniford, M. E., Mason, G. J., Widowski, T. M.

    The nest surfaces preferred by hens are inconsistent with those typically provided in commercial settings. However, little research has explored hens' preferences for commercially available nest surfaces. Our objective was to compare hens' preferences for two such surfaces - red smooth...

  9. Nest alternatives: Adding a wire partition to the scratch area affects nest use and nesting behaviour of laying hens in furnished cages

    | Contributor(s):: Hunniford, Michelle E., Widowski, Tina M.

    Furnished cages (FC) are designed to accommodate highly motivated behaviour patterns like nesting; however, how hens perceive the resources provided in FCs is not fully understood. Our previous research of hens in FCs with a curtained nest (plastic mesh floor) and a scratch area (smooth plastic...

  10. Rearing environment and laying location affect pre-laying behaviour in enriched cages

    | Contributor(s):: Hunniford, Michelle E., Widowski, Tina M.

    The number of eggs laid in a nest is often correlated with nest acceptance and therefore hen welfare. However, evaluating pre-laying behaviour may more accurately reflect welfare independent of egg location. Our objective was to compare the effect of rearing environment and laying location on the...

  11. Laying hens performing gregarious nesting show less pacing behaviour during the pre-laying period

    | Contributor(s):: Tahamtani, Fernanda M., Hinrichsen, Lena K., Riber, Anja B.

    The phenomenon of gregarious nesting occurs when hens choose to enter and lay their eggs in a nest box which is already occupied by one or more hens, even when an empty nest box is also available. It has been suggested that inexperienced hens copy the nest selection preferences of experienced...

  12. Curtained nests facilitate settled nesting behaviour of laying hens in furnished cages

    | Contributor(s):: Hunniford, M. E., Widowski, T. M.

    Egg location can be used to determine the nests that hens prefer, but it does not indicate whether the design of that nest satisfies a hen's nesting motivation. Hens that are satisfied with the nest resources exhibit characteristic settled nesting behaviour including less activity and longer...

  13. Nest location preferences in zoo-housed orangutans

    | Contributor(s):: Bastian, Meredith L., Glendinning, David R., Reddy, Alexandra J., Herrelko, Elizabeth S., Brown, Melba, Renner, Elizabeth, Thompson, Laurie

    Nest building is an advanced and complex activity that wild orangutans engage in, yet they do so on a daily basis and with potential safety consequences. Like their wild counterparts, zoo-housed orangutans also make nests when given adequate materials, yet comparatively little research has...

  14. Influence of egg oiling on colony presence of ring-billed gulls

    | Contributor(s):: DeVault, Travis L., Schmidt, Paige M., Pogmore, Fred E., Gobeille, John, Belant, Jerrold L., Seamans, Thomas W.

  15. Generational habituation and current bald eagle populations

    | Contributor(s):: Guinn, Jeremy E.

  16. Movements, habitat selection, associations, and survival of giant Canada goose broods in central Tennessee

    | Contributor(s):: Dunton, E. M., Combs, D. L.

  17. Improved methods for deterring cliff swallow nesting on highway structures

    | Contributor(s):: Delwiche, M. J., Coates, R. W., Gorenzel, W. P., Salmon, T. P.

  18. Mate choice, maternal investment and implications for ostrich welfare in a farming environment

    | Contributor(s):: Bonato, M., Cherry, M. I., Cloete, S. W. P.

    At present, the ostrich industry is inefficient, on account of being characterised by inadequate egg production, high embryo mortality, poor chick survival and suboptimal growth rates. However, as ostrich farming commenced only in the mid 19th century in South Africa, farmed ostriches have had a...

  19. Bringing the Endangered Barn Owl Back to McLean County, Illinois: Implementing a Local Nest Box Program

    | Contributor(s):: Anna Groves

    Barn owls are an endangered species in Illinois, but populations have been known to increase where nest box programs have been implemented. In conjunction with the John Wesley Powell Audubon Society, a barn owl nest box program was established in McLean County and the surrounding area. Seventeen...

  20. Strategic use of straw increases nest building in loose housed farrowing sows

    | Contributor(s):: Westin, R., Hultgren, J., Algers, B.

    In spite of domestication, sows are still genetically programmed to perform nesting behaviour close to farrowing. In order to facilitate nest building, a method for a strategic use of large quantities of straw has been developed by Swedish piglet producing farmers. The objectives of the present...