Identity of strange bird with fish net tangled around one foot
This could be an immature black-crowned night heron, Nycticorax nycticorax.
Lines of evidence:

pale yellowish bill
thick neck
hunched back
orange eyes
head feather patterning consistent with &quot;black crown&quot; in adults

See these photos and captions published by the Cornell Lab of Ornithology:


Juvenile Black-crowned Night Heron
Thick-necked heron with a thick bill. Juveniles are brown and streaky overall. Note pale yellowish bill.
© Evan Lipton

Immature Black-crowned Night Heron
Immature birds have a mix of juvenile and adult plumage. This individual has faint streaking on the chest, a dark gray cap, and a nearly complete dark gray back.
© Alex Lamoreaux

Adult Black-crowned Night Heron
Stocky and compact heron. Often tucks neck into its body creating a hunchbacked look. Adults have a black cap and back that contrasts with its whitish to pale gray belly and gray wings.
© Jeff Timmons

Note the fishing line tangled around the adult bird's feet.  Must be a common trait!