Funding for this research was provided by:
National Institute on Deafness and Other Communication Disorders (T-32 DC00046-16, T32 DC00046)
Received: 17 October 2017
Revised: 16 April 2018
Accepted: 18 April 2018
First Online: 15 May 2018
Compliance with ethical standards
: This work was conducted in accordance with Association for the Study of Animal Behaviour (ASAB) guidelines and was approved by the Institutional Animal Care and Use Committee (IACUC) (R-15-09), University of Maryland, College Park.