"My Birds" is the most comprehensive app for avian management. Forget about lost paper chips where you can’t find anything chaotic calculus sheets and notes in calendars. With "My Birds" you can easily manage your birds pairings and eggs. Main features:

Hybridization
An unlimited number of birds pairings and species.
Automatic notifications for hatching eggs.
Follow-up of genealogies and consanguinity.
Purchases and sales.
Expenses management.
Advanced search for birds and couples.
Statistics.
Picture galleries.
Competition participations.
System cloud backup and recovery. You can change your phone without losing your data.
Export app data to Google Spreadhseet.
Dark theme.

"My Birds" is free and doesn't require an internet connection (except for making and recovering backups) or user registration.