One I have never seen before. As best as I can tell from my internet search, this is the cocoon of the Evergreen Bagworm Moth (Thyridopteryx ephemeraeformis). But it has attached itself to metal where it normally attaches itself to an evergreen like cedar or arborvitae. It decorates itself and cocoon with the plant material on which it feeds. You can see all the different cocoons it can make here - https://www.butterfliesandmoths.org/species/Thyridopteryx-ephemeraeformis and read more about them here - https://en.wikipedia.org/wiki/Evergreen_bagworm
Great close up. Trichoptera są bardzo licznym rząd owadów wodnych o przeobrażeniu zupełnym. Larwy chruścików są dobrymi bioindykatorami wykorzystywanymi w biomonitoringu wód. https://en.wikipedia.org/wiki/Caddisfly
@dkellogg Thank you so much, David.
@jeremyccc Thanks, Jeremy.
@bkbinthecity Thanks, BKB.
and read the three lines here: https://bugguide.net/node/view/11342#life_cycle
@rhoing Oiy! Links say they aren't private. I'll have to try them on my new iMac.
@danette Thanks, Danette.
@wh2021 Thank you.
@ljmanning Thank you, Laura.
@jgpittenger Very. =)
@shutterbug49 Thank you! I think you're right.
@photographycrazy Very. =)
@ludwigsdiana Thank you, Diana.
@pusspup LOL! Probably not.
@sangwann Thank you, Dione.
@bigmxx Thanks, Michelle.
@ososki Thanks so much, Bill.
@craftymeg Thank you, Margaret.