The blue-footed booby usually lays one to three eggs at a time. Unusually the eggs are incubated as they are laid, not like most other species where the incubation starts when the last egg is laid. The chicks do not hatch at the same time, this results in a growth inequality and size disparity between siblings. This makes the blue-footed booby an important model for studying parent–offspring conflict and sibling rivalry.
Watercolour illustration of an Alpaca by Daniel Mackie. Printed on High quality 330gsm card. Cards are 7 x 5 inches.
Cards are blank inside so can be used for any purpose, such as Thank-you cards, Birthdays or Christmas.
Cards are packed with envelopes and are protected in a cello bag.
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