birdy-0.1.2 is not a library.
Screenshot tool for Linux.
Supports both X11 and Wayland.
Since I'm not using neither MacOS or Windows at all there are no any guarantees related to these platforms.
If you want to add a support for MacOS or Windows - PRs are welcome.

Installation
Usage
birdy --help
Usage:
Currently it can be run only through "birdy" executable(from terminal, app launcher(e.g. rofi), bound to a hotkey):
# bash
birdy
# e.g. sway
bindsym $mod+Shift+p exec birdy
Hotkeys:
Enter - take a screenshot of selected area, save to a clipboard and exit
f - take a screenshot where selected area is focused, save to a clipboard and exit
l - draw a line
r - draw a rectangular border
p - draw a filled rectangle
t - toggle latest drawn shape between filled/not filled states
Esc - exit