| Quantitative Comparisons of Changes in Northern Cardinal Songs Over Time and Space Sylvia L.Halkin. Central Connecticut State University, New Britain, CT, USA |
Abstract
Northern Cardinals have individual repertoires of 8-12 song types, shared by both males and females living in the same local population. In comparing songs I recorded from 1981-1986, to songs I recorded in the same location from 2021-2026, I found changes had occurred over this long period of continuous occupancy by Northern Cardinals. Some songs from the 2020s were quite different from any 1980s songs. Other songs had components with similar overall patterns of frequency modulation across the two periods, but with modified frequency ranges and/or repetition rates. In some 2020s songs, both old and new versions of components were included. I will present quantitative comparisons of similar songs and song components recorded in both time periods. I will also make comparisons to similar songs I recorded in 2021 at 10-mile increments from the location of the 1980s recordings. These comparisons provide insight into long-term song consistencies that may help to identify singers as locally adapted birds and facilitate song matching communication within a local population.
No part of this publication may be reproduced, distributed, or transmitted in any form or by any means, including photocopying, recording, or other electronic or mechanical methods, without the prior written permission of the author.
Content Locked. Log into a registered attendee account to access this presentation.