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1 August 2011 Variation of the Reed Bunting (Emberiza schoeniclus) Body Condition and Haematological Parameters in Relation to Sex, Age and Season
Dariusz Jakubas, Katarzyna Wojczulanis-Jakubas, Wojciech Glac
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Abstract

The body condition and haematological parameters of birds are influenced by a multitude of factors. Here we investigated body mass, fat scores, ratio of heterophils and lymphocytes (H/L), red blood cell count (RBC) of reed buntings (Emberiza schoeniclus), expecting differences between spring and summer (different physiological states/energy demands in breeding/post-breeding periods), sexes (different parental duties) and age groups (different experience/social status). Fat scores and size-corrected body mass were similar in all the groups. Adults in spring had higher H/L than in summer, which may have been due to reproduction-related stress or the seasonal elevation of glucocorticoids. The lower RBC and H/L in adults in summer were associated with their complete moult. Lower H/L in adults in summer compared to immatures may have resulted from their lower stress level (greater experience/higher social status) or a complete moult. The H/L ratio was similar in both sexes, despite their different parental duties.

© Finnish Zoological and Botanical Publishing Board 2011
Dariusz Jakubas, Katarzyna Wojczulanis-Jakubas, and Wojciech Glac "Variation of the Reed Bunting (Emberiza schoeniclus) Body Condition and Haematological Parameters in Relation to Sex, Age and Season," Annales Zoologici Fennici 48(4), 243-250, (1 August 2011). https://doi.org/10.5735/086.048.0405
Received: 4 January 2011; Accepted: 1 March 2011; Published: 1 August 2011
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