Thanks Penar, this gave me the idea to swap out the logo in desktop view below 768px to the mobile logo. Something similar should probably be in core. Thanks!
@media only screen and (max-width: 768px) {
body {
.d-header #site-logo {
content:url("https://images.naturephotographers.network/original/2X/4/45d1b54bc00a5a737fae7dfe3d79b8d8dfd71729.png");
}
}
}