Silkworms?

Curious if these are silkworms or not, trying to identify the tree they're on, not sure if they're mulberry or not. Anyone know? EDIT: Location is southern Ontario https://preview.redd.it/byhq9nrg0k171.jpg?width=1456&format=pjpg&auto=webp&s=27d95c12f6f424041e5406006b12bd71db1a7ec6 submitted by /u/Itisaguy [link] [comments]

source https://www.reddit.com/r/Entomology/comments/nlv28n/silkworms/