Final answer:
True. A forest-breeding warbler is likely to suffer poor nesting success in small, fragmented forest patches.
Step-by-step explanation:
The statement is True. A forest-breeding warbler is likely to suffer poor nesting success in small, fragmented forest patches. This is because small and fragmented patches may not provide adequate resources such as food, nesting sites, and protection from predators. As a result, the warbler's nesting success can be negatively impacted, leading to lower survival rates and population decline.