disclose to hatch:
“When that her golden couplets are disclosed,”
HAMLET, v. 1. 281
(
“Disclose is when
the young just peeps through the shell. It is also taken for laying, hatching, or bringing
forth young; as ‘She disclosed three birds.’”
R. Holme's Academy of Armory and
Blazon [Terms of Art used in Falconry, etc.], B. ii. c. xi. p. 238).