When rainfall, and thus food, are plentiful, the birds tend to have a varied diet, e.g., eat seeds of a range of sizes show considerable variation in body and beak size (large beaks are better for large seeds but can handle small seeds as well as small beaks) From 1976 through 1977, a severe drought struck the islands, with virtually no rainfall for over a year.
(large beaks; are; better for large seeds) Context(large beaks are,List([170, 185))):(the birds; tend; to have a varied diet) Context(the birds tend large beaks are,List([45, 185))):(When rainfall, and thus food; are; plentiful) (large beaks; can handle; small seeds as well as small beaks; From 1976 through 1977) (the birds; to have; a varied diet) (a severe drought; struck; the islands) (large beaks; are better for; large seeds)
large beaks are,List([170, 185)) the birds tend large beaks are,List([45, 185))
large beaks the birds When rainfall, and thus food large beaks the birds a severe drought large beaks
are tend are can handle to have struck are better for
better for large seeds
to have a varied diet
plentiful
small seeds as well as small beaks From 1976 through 1977
a varied diet
the islands
large seeds