Transfery pokarmu u błotniaka łąkowego w okresie godowym ; Short notes
Museum and Institute of Zoology, Polish Academy of Sciences
Museum and Institute of Zoology, Polish Academy of Sciences
Male Montagu's Harriers delivered prey to their mates by ground and aerial transfer. Between 1992 and 1995, 365 cases of food pass behaviour were recorded (0.47 transfer per observation hour) on calcareous marshes near Chełm in eastern Poland. All of them were observed inside the territory. Ground transfer was dominant at the beginning of the pre-laying period during the time of pair formation. In the courtship season 107 ground transfers (29%) were observed (0.2 per hour). Aerial transfers were observed in 258 cases (71%, 0.41 per hour). The efficiency of aerial food pass was 98% (only five passes ended in the loss of food), that of ground transfer was 100%. Food transfer was strongly correlated with copulation, especially after ground transfer. The number of ground transfers of food was correlated with average time of sky-dancing in males.
oai:rcin.org.pl:55582 ; 10.3161/068.041.0104
MiIZ PAN, call no. P.257 ; MiIZ PAN, call no. P.4568 ; kliknij tutaj, żeby przejść
Rights Reserved - Restricted Access
Museum and Institute of Zoology of the Polish Academy of Sciences
Library of the Museum and Institute of Zoology of the Polish Academy of Sciences
8 sie 2023
29 lip 2015
4
https://rcin.org.pl./publication/75751
Nazwa wydania | Data |
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Short notes: Food Transfer in Montagu's Harrier Circus pygargus During Courtship / Jarosław Wiącek | 8 sie 2023 |
Wiącek, Jarosław