Journal
EUROPEAN ZOOLOGICAL JOURNAL
Volume 88, Issue 1, Pages 807-815Publisher
TAYLOR & FRANCIS LTD
DOI: 10.1080/24750263.2021.1947397
Keywords
Bryophytes; mosses; liverworts; parus major; the Great Tit; cyanistes caeruleus; the Blue Tit
Categories
Funding
- University of Lodz [506/1145]
- National Science Centre Poland [N304 045136]
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The study found that both Blue Tits and Great Tits are selective in the bryophytes they use for nest construction. The composition of bryophytes in nests varied between urban parkland and forest environments. Overall, the bryophyte species composition in nests seems to be influenced more by the site rather than the specific tit species.
A considerable number of avian species tend to use bryophytes as nest construction material, but the selectivity of birds in their bryophyte use in nest construction in relation to the availability of particular mosses in individual territories remains largely unexplored. We studied the bryophyte composition of nests in two passerine species: the Blue Tit Cyanistes caeruleus and the Great Tit Parus major in two floristically and structurally contrasting study areas (a mature deciduous forest and an urban parkland). We also studied territories within a radius of 10 m from each occupied nest box, listing all bryophyte species and checking to what extent the moss composition of the nest reflected what was available in the surrounding of the nest box. Both tit species appeared to be selective. The tits used a total of 31 bryophyte species in their nests (27 found in Blue Tits and 19 in Great Tits), whereas 25 additional bryophyte species were found around (10 m radius) the studied nests, but not in the nests. The number of bryophyte species found in individual nests varied in the urban parkland between 1 and 6 and in the forest between 1 and 11. The average number of bryophytes in the nest ranged from 2.31 in Great Tit from the urban parkland to 3.52 in Blue Tit in the urban parkland. Only a few species were used in a higher proportion than 5% of the volume within a single nest and, considering only these most abundant bryophyte species, the mean number ranged from 1.28 in Great Tits in the forest to 1.57 in Blue Tits in the urban parkland. Our study also showed that, in general, the bryophyte species composition of the nests seems to be affected by the site (the urban park vs the forest) rather than the parid species (Blue Tit vs Great Tit).
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