These 'sea trout' and salmon are separately categorised in law as 'migratory fish'.

Migratory fish (salmon, sea trout and trout) must access these streams to spawn and continue the species.

The rates for 2006-07 are 24 for coarse fish and 65 for salmon/ migratory fish.

Where dams impede the progress of migratory fish they are easily demolished, and the numerous ponds they create are a haven for wildlife as well as controlling flooding.

This could in theory change, if migratory fish such as salmon could be introduced into the river system.

Nevertheless, from 1960 on and due to the closing of mines and to the changes experienced by the traditional agriculture, a very important migratory flow started.

As a nation that last year took in a net 330,000 people we are also making a substantial contribution towards total migratory flows.

Not all migratory flows come from poorer regions, however.

However, protesters assert that the survey areas are feeding grounds for marine birds and are on the migratory path of the endangered fin whale.

The rivers and lakes in the town are part of a salmon spawning migratory path.

Wherever migratory paths crossed, there was also the most diversity, creativity and opportunity to learn.

The birds have eggs, they have migratory patterns.

Changes in the migratory patterns of birds are due to chicks hatching earlier in the spring because of a warmer climate, scientists have found.

We are told that cooking promoted dietary innovations that fostered domestication and sedentariness, that kinship categories encoded migratory patterns, that artefacts reflected growing self-esteem and group identity.

The migratory patterns and breeding times of some bird species have altered.

Some species are expanding their territory while it has also affected the migratory patterns of birds.

The satellite tag will track the turtle's migratory route for the first time.

Through this method we’re able to “connect the dots” between the locations of receivers that picked up our tags and piece together the migratory route from there.

The area serves as a vital migratory route and resting place for countless species of birds.

Some use the park as a stop on their migratory route, while others breed in the park.

That way, he could show them the traditional migratory route for their species.