Procore customization cost: If you need specific features in your software catering to your specific business requirements, the vendor will charge customization cost, depending on your needs and feature requirement. Ideally customization cost is more complex to calculate compared to licensing cost.
A group of different animals is called an ecosystem. An ecosystem consists of groups of different species of organisms.
A group of wading birds, however, is just a flock if there are herons, godwits, egrets, flamingos, storks and plovers all mixed in the crowd. The collective nouns for different groups of birds can be a fun bit of birding lingo to use when describing what you see in the field.